Community:Fallout: New Vegas Easter Eggs

1984
In Old World Blues, the Book Chute will reference using a cage over your head and a bag of mole rats, a direct reference to how the protagonist of 1984 was tortured in both the book and the movie.

300
The Gun Runners' Arsenal challenge "Even a God-King Can Bleed" requires one to cripple Caesar's head with throwing spears. This is a reference to when Leonidas I of Sparta says that by the end of the battle he will prove that even a God-king can bleed, and does so by scoring a glancing blow across Xerxes's cheek with a thrown spear.

Aliens
If the player has the Wild Wasteland trait, NCR Emergency Radio chatter includes the phrases "Game over, man, game over!" and "They're coming out of walls, they're coming out of the goddamn walls!". These two phrases are direct quotes from the film Aliens.

Anarchists Cookbook
The skill magazine, the Patriot's Cookbook is a reference to the Anarchist Cookbook, a controversial book containing instructions on building homemade explosives. The in-game picture of the Patriot's Cookbook shows a "Banned" sticker on the front cover.

Anchorman: The Legend of Ron Burgundy
Mr. New Vegas will end a news segment by saying "Stay classy, New Vegas." In Anchorman: The Legend of Ron Burgundy, Ron Burgundy's signoff is "You stay classy, San Diego".

Beast Wars: Transformers
The hairstyle "Terrorsaur", a short, rounded mohawk, is named as such because it has a similar shape to the crest on the head of the character Terrorsaur from Beast Wars.

Better Off Ted
The Powder Ganger Philip Lem is a reference to Phil and Lem, two scientists from the American sitcom Better Off Ted.

Bioshock
A Slave Obeys, a Gun Runners' Arsenal challenge, is a reference to the death of Bioshock's villain, Andrew Ryan. The challenge requires you to kill Mr. House with a golf club, which is referencing the way you eventually kill Ryan in the game. The title of the challenge is a reference to the phrase Ryan repeats before you kill him: "A man chooses, a slave obeys".

The Bible

 * The quest Render Unto Caesar is a reference to a famous phrase from the Bible: "Render unto Caesar the things which are Caesar’s, and unto God the things that are God’s" - Matthew 22:21
 * All achievement/trophy names for Honest Hearts are references to the Book of Psalms.

The Black Orchid
The cover of ¡La Fantoma! is a flipped replica of Adventure Comics 428, by DC comics. It is the origin issue of the character the Black Orchid.

Blade Runner
That Gun is modeled on Deckard's gun from the film Blade Runner.

The Gun Runners challenge "Benefit or A Hazard" is a reference line from the film Blade Runner spoken by Harrison Ford "Replicants are like any other machine - they're either a benefit or a hazard. If they're a benefit, it's not my problem."

Brewdog
Inside Brewer's Beer Bootlegging there is a sign for "Strategic Nuclear Moose" which is a reference to the real-life "Tactical Nuclear Penguin" imperial stout produced by Brewdog, a Scottish craft brewery.

Cabazon Dinosaurs
Dinky the Dinosaur of Novac is a reference to Dinny the Dinosaur and Mr. Rex, the Cabazon Dinosaurs.

Calvin & Hobbes.
Calvin's favorite brand of cereal is Chocolate Frosted Sugar Bombs.

Carmen Sandiego
During your investigation of a traitor at Camp McCarran, the traitor may utter the words "You're getting too close, Shamus". This is a line from the Carmen Sandiego line of video games.

David Caruso
During your investigation of the White Glove Society, you might encounter an investigator by the name of Crusoe. It's possibly a reference to David Caruso, who has played investigator roles on NYPD: Blue and CSI: Miami. This becomes more apparent with the Wild Wasteland trait enabled, as the investigator has Caruso's red hair and sunglasses.

Doctor Who

 * An NCR Emergency Radio Broadcast references The Doctor, and the BBC, the network that Doctor Who is broadcast on. ("Bravo Bravo Charlie the Doctor is coming")
 * In combat, the Securitrons may yell "EXTERMINATE", the signature line of the Daleks.
 * Written on a pillar in a wine cellar in Dead Money is "I am not your mummy!". This is a reference to the two part episode "The Empty Child/The Doctor Dances", in which the zombie-like enemies with gas-mask faces (who bear a remarkable resemblance to the ghost people in the add-on) ask everyone "Are you my mummy?".
 * With Wild Wasteland enabled, the trauma override harnesses will say "Hey, who turned out the lights?", a reference to the Doctor Who episode Silence in the Library. In the episode alien particles control a spacesuit containing a skeleton which repeats the dead wearer's last words over and over.
 * The sonic emitter from Old World Blues is a reference to the Doctor's companion Jack Harkness. Who on his first appearance on "The Empty Child" was wielding a Sonic Blaster which shares a very similar design.

Dr. Horrible's Sing Along Blog
Veronica Santangelo frequently has sporks in her inventory. This is likely a nod to another character played by actress Felicia Day, Penny from Dr. Horrible's Sing-Along Blog in which her character frequently uses sporks to eat frozen yogurt.

Dr. Strangelove

 * The achievement Love the Bomb is a reference to Dr. Strangelove or How I Learned to Stop Worrying and Love the Bomb.
 * The heavily trapped house in Nipton, just across the road from the General Store with a sandbag wall protecting the door, has a note about "vital essence", which appears to be a reference to General Jack D. Ripper's obsession with "precious bodily fluids" in "Dr. Strangelove".
 * The logo for the Atomic Wrangler is a reference to the famous scene in which Major T. J. "King" Kong rides a falling nuclear bomb like a rodeo cowboy.

Duck and Cover
The skill book Duck and Cover! is named after the practice taught to American school children to avoid harm if a nuclear war were to break out, namely to duck under a table or desk and cover their heads.

Dwight Eisenhower
The "I Hate Nate" and "I Hate Kate" election posters in Vault 11 are a reference to U.S. President Dwight D. Eisenhower's 1952 campaign slogan, "I Like Ike."

Eastman Kodak Company
A functioning camera, the Codac R9000 is given to the player by Michael Angelo during the side quest Classic Inspiration. The camera's appearance is almost identical to that of the Hawkeye Brownie, which was produced by Kodak.

The Elder Scrolls IV: Oblivion
In Freeside, some street-lights are stamped with TES-04, referencing an another game made by Bethsda called "The Elder Scrolls IV: Oblivion".

Elmer Fudd
If the player has Cass as a companion, when sneaking she occasionally says, "Be very, very quiet; we're huntin' shit heads." This is a direct reference to Elmer Fudd's famous quote, "Be vewy, vewy quiet; I'm huntin' wabbits."

Elvis Presley

 * G.I. Blues and Viva Las Vegas are titles of films starring Elvis Presley who also performed songs of the same titles for the movies.
 * The Freeside gang The Kings are rife with references to Elvis. The King's dialogue frequently uses song titles as turns of phrase. In addition, most members of The Kings talk in a style that resembles how the American youth - influenced by the Rock & Roll era - talked in 1950's movies.
 * In addition, the quests Nothin' But a Hound Dog and Return to Sender are also the names of songs by Elvis Presley.

Euclid
Euclid's C-Finder is a reference to the Greek mathematician Euclid, regarded as the "father of geometry".

Forrest Gump

 * The quest title "Run Goodsprings Run" is a reference to an iconic line "Run, Forrest, Run!" from the film Forest Gump.
 * Private Jeremy Watson, the soldier who is to receive a medal from President Kimball during his visit to Hoover Dam, bears many similarities to Forrest Gump: they are both in the army, share the same haircut, and both are less than intelligent. As a further reference, Watson claims he will meet the president personally and receive a medal for his duties. Like Gump, he is unwittingly humble for his achievements.

Frank Sinatra
When the Courier wins 4,500 caps at Gomorrah the floor manager says "Looks like you're on a roll! Luck be a lady tonight!" This is a line from the song "Luck Be A Lady," written by Frank Loesser for Guys and Dolls, the Broadway musical about gamblers and their girls. Mr. New Vegas also mentions "lady-like luck" on the radio. Frank Sinatra played Nathan Detroit in the film version, but the song was actually sung by Marlon Brando(!) in that movie. Sinatra later made it one of his standards.

Another reference to Frank Sinatra is one of Hadrian's insults hurled at Swank when he says "Make yourself at home Swank, hit somebody!", this is also a reference to Don Rickles.

The quests My Kind of Town, One For My Baby, Come Fly With Me, and Ring-a-Ding-Ding! are references to songs sang by Frank Sinatra.

Futurama
Inside the Cave of the Abaddon, there is a fossilized dog named Seymour. This is a reference to the Futurama episode "Jurassic Bark", in which Fry finds his dog Seymour fossilized. You can only find Seymour if you have the Wild Wasteland trait.

Homestar Runner
In the GECK, the object effect for the Flare Gun is named "Burninate All the Peoples", a line from Strong Bad's Trogdor song.

Howard Hughes
Mr. House is in most aspects based on the famous recluse Howard Hughes. Many aspects of House's personality, lifestyle and backstory are modeled on Hughes: his reclusive nature, his terror of bacteria, his fixation on Las Vegas, his insistence on working only through trusted lieutenants, his appearance, and his relationships with pre-War film stars. A portrait of House standing in front of a large robot is based on an iconic photograph of Hughes standing in front of a Boeing Army Pursuit Plane in the 1940s.

Indiana Jones

 * The Wild Wasteland trait adds an encounter with a refrigerator containing a fedora and skeleton. This is a reference to the scene in "Indiana Jones and the Kingdom of the Crystal Skull" where Indiana Jones saves himself from an atomic bomb explosion by taking cover in a lead-lined fridge.
 * An email outbox on a computer terminal in the Sunset Sarsaparilla Headquarters includes a message addressed to "Marcus Brody, VP of Technology."

Infinity
All of the Think tank doctors' names are references to an infinite loop: Dr. Klein and the Klein bottle, Dr. Mobius and the Möbius strip, Dr. Borous and the ouroborus, Dr. Dala and the mandala as well as 8|Dr. 8 and 0|Dr. Zero.

John Mellencamp
In the Great Khan Encampment, you can find a couple named Jack and Diane. Jack is a dark haired male and Diane is a younger blonde woman. They are likely referencing the John Mellencamp song "Jack and Diane" from 1982, in which the music video has a dark haired male and blonde woman.

Kate Beaton
The unique Tesla cannon, the Tesla-Beaton prototype, is named after Kate Beaton, a Canadian webcomic artist known, among other things, for several comic strips about Nikola Tesla.

La Longue Carabine
Corporal Sterling, a member of 1st Recon at Camp McCarran will, if asked about his gun, state that it is known as "La Longue Carabine". This is a reference from the book Last of the Mohicans, in which La Longue Carabine is one of the nicknames for both Natty Bumppo and his rifle.

Lassie
With the Wild Wasteland trait the player can talk to Rex, and receive a map marker indicating the location of somebody (named Jimmy) who fell into a well.

Less Than Jake
In the Goodsprings Cemetery, there is a grave marked Jay Frenzal. This is reference to the song of the same name from the album B Is for B-sides by an American ska-punk band Less Than Jake. The song, in turn, is a reference to Jason Whalley of Frenzal Rhomb, who has one line on the track.

Lost
A broadcast from the NCR Emergency Radio references the numbers 4, 8, 15, 16, 23, 42 which is part of the mysterious and significant chain of numbers in the aforementioned TV show.

Logan's Run
In Old World Blues, the trait Logan's Loophole is a reference to the 1976 science fiction film Logan's Run based on the 1967 novel of the same name.

Mad Max

 * The achievements Blast Mastery and You Run Barter Town are both references to Mad Max: Beyond Thunderdome. Blast Mastery refers to the character of Masterblaster, and Bartertown was the location around which Beyond Thunderdome was set.
 * The leather armor, reinforced, as well as the lightweight leather armor also bear a strong resemblance to the armor worn by Max in the series.

Monty Python

 * At Cottonwood Cove, spray painted on one of the buildings is "ROMANES EUNT DOMUS"(Romans go home), which is a reference to Monty Python's The Life of Brian. This only appears with the Wild Wasteland trait.
 * Inside one of the church basements at Camp Searchlight are three Holy Frag Grenades, a reference to Monty Python and the Holy Grail. These also only appear with the Wild Wasteland trait.
 * Another Monty Python and the Holy Grail reference appears during the quest They Went That-a-Way. When you first talk to Jessup, he will express shock at your survival. One of the possible responses to this is "I got better." This phrase used in this context is one of the many running jokes of the aforementioned film.
 * With the Wild Wasteland trait, you will be confronted by Maud's Muggers, a gang of elderly hoodlums, outside of Cerulean Robotics. This is a reference to the skit, "Hell's Grannies" from "Monty Python's Flying Circus".
 * The food item squirrel on a stick is likely a reference to the food item "rat on a stick" in "The Meaning of Life".

Mister Las Vegas
Wayne Newton is known as Mr. Las Vegas. He voices the radio personality Mr. New Vegas.

Obsidian Entertainment

 * In the South Vegas Ruins, there is a small building called Zapp's Neon Signs. Inside, on a terminal at the bottom of the building, there is a neon sign order from Scott Evert, a reference to Scott Everts.
 * The Evil Gnome has a baseid of Scottegnome.

Sesame Street
You may hear Dog saying "Om nom nom" while devouring an enemy, but only with the Wild Wasteland trait. This is a most likely a reference to the Cookie Monster.

One Fish, Two Fish, Red Fish, Blue Fish
Marcus might say when attacking: "one fist, two fist, red fist, blue fist". This is a reference to the Dr. Seuss book One Fish, Two Fish, Red Fish, Blue Fish.

PEPCON Explosion
REPCONN Aerospace is a reference to the PEPCON disaster, which happened 10 miles away from Las Vegas on March 4, 1988. Said explosion's detonation caused a 3.0 magnitude earthquake and shattered windows at nearby McCarran Airport and buffeted a landing 737. Also, the REPCONN Shakes implies a connection as during an earthquake, the ground shakes.

Patton
The unique Mister Gutsy Ironbelly's line, "There's nothing I like better than making some other poor bastard die for his country!" is a version of a line from the 1970 movie Patton: "Now, I want you to remember that no bastard ever won a war by dying for his country. He won it by making the other poor dumb bastard die for his country."

Period songs

 * The quest Aba Daba Honeymoon is named for a song by Debbie Reynolds.
 * The quest Ant Misbehavin' is named for the song Ain't Misbehavin' by Fats Waller.
 * The quest Anywhere I Wander is named for a song written by Frank Loesser and popularized by Danny Kaye.
 * The quest Back in Your Own Backyard is named for a song written by Billy Rose and Dave Dreyer, which was popularized by Al Jolson.
 * The quest Bitter Springs Infirmary Blues is named for the song St. James Infirmary Blues, popularized by Louis Armstrong.
 * The quest I Fought the Law is a reference to the song of the same name by Sonny Curtis.
 * The quest I Put a Spell on You is named for the song by Screamin Jay Hawkins.
 * The quests Ring-a-Ding-Ding!, My Kind of Town and Come Fly With Me are titles of songs sung by Frank Sinatra.
 * Ain't That a Kick in the Head is the title of a song, popularly sung by Dean Martin.
 * The quest Volare! references the popular title of an Italian song best known in English through a translated version sung by Dean Martin. The original full title of the song is "Nel blu dipinto di blu" ("In the blue, painted blue").
 * Bye Bye Love is the title of a song by The Everly Brothers.
 * The perk and challenge Day Tripper is the title of a Beatles song.
 * The perk Mister Sandman is a reference to the song of the same name.
 * Mr. New Vegas's "new album", Nuclear Winter Wonderland, is a reference to the song Winter Wonderland.
 * The quest We Will All Go Together is named for a song by Tom Lehrer, which humorously refers to the total destruction of life through nuclear war.
 * The quest High Times is named for a song by The Grateful Dead.

Planet of the Apes
If the player has the Wild Wasteland trait, and nukes both sides at the end of Lonesome Road, the ending slide will quote Charlton Heston and show a picture representing the ending scene from the original Planet of the Apes.

The Princess Bride
With the Wild Wasteland trait, rodents of unusual size can be encountered in various places. The protagonist of the film, Wesley, states that he doesn't believe that rodents of unusual size exist, before promptly getting attacked by one.

(Léon) The Professional
The perk The Professional is a reference to the 1994 film Léon released in the US as The Professional and directed by Luc Besson. The correlating in-game picture features a stylized Vault Boy with a coat, stubble and round glasses similar to the main character of the film, played by French actor Jean Reno. The picture also features a potted plant that plays a significant role in the film.

Professional Wrestling
During the quest G.I. Blues when heading over to the Old Mormon Fort in Freeside, there are three men in one tent named Roy, Wayne, and Farris. The three names put together are a reference to Roy Wayne Farris, a professional wrestler who wrestled for WWF and WCW during the 1980s and 1990s as "The Honky Tonk Man".

Return of the Living Dead
Red-haired, death-obsessed woman named Trash, whom the player finds dead in a shack beside the old nuclear test site, is a reference to the character Trash in Return of the Living Dead.

Rime of the Ancient Mariner
The name of the challenge ...And Not a drop to Drink, is part of a commonly misquoted couplet from Samuel Taylor Coleridge's poem "Rime of the Ancient Mariner." The actual lines are:

"Water, water, every where,

Nor any drop to drink."

RoboCop
The name of the Gun Runners' Arsenal challenge Ne Ne Ne Ne... is a reference to the film RoboCop; it's the sound Clarence Boddicker makes when he blows off Alex Murphy's right hand with a shotgun.

Sammy Davis, Jr.
Tommy Torini bears striking resemblance to Sammy Davis, Jr. the only African-American member of the entertainment group, the "Rat Pack", even down to the missing eye, which Sammy Davis, Jr. lost in an auto collision. He looks almost identical to Sammy Davis, Jr. in the movie, "Johnny Cool" from 1963

Six String Samurai
The name and icon for the New Vegas Samurai achievement is a reference to the Palm Pictures film Six-String Samurai. The guitar, stubble, and glasses are all references to the film's main character, Buddy.

Sneakers
The two passwords for the Eastern and the Western reflector control terminals are text encoded in hex and can be found in the notes. The decoded Eastern password is Too many secrets and the Western decoded password is My voice is my passport. - both are notable passphrases in Sneakers.

Snow White and the Seven Dwarfs
In the add-on Old World Blues with Wild Wasteland on near by the Construction site the player will be able to find seven garden gnomes stood facing the red stones, with a number of pickaxes on the ground. This is a reference to the childen's story Snow White and the Seven Dwarfs about a girl who escapes her evil step mother and lives with a small group of dwarven miners.

Something Awful

 * The YCS/186 Gauss rifle is named for the "Your Console Sucks" forum that has the forum ID number 186.
 * The abbreviated console command for disabling Hardcore Mode is "Babby", a reference to a meme that originated on the Something Awful website. In addition, the word "Babby" is often used as a pejorative in various Something Awful subforums.
 * A Wild Wasteland encounter found near Goodsprings consists of a man in glasses named Johnny found dead at the edge of a cliff. Johnny is surrounded by various objects including five ace cards and four orange balls. This is a reference to Zybourne Clock, a failed amateur game project that originated on Something Awful.

Star Trek

 * The perk Set Lasers for Fun is a reference to the phrase "Set phasers to stun" from Star Trek.
 * The damage challenge "Beam (Weapon) Me Up" is a reference to the phrase "Beam me up, Scotty". It comes from the oft-quoted, but never used in the show, order that Captain Kirk gives his chief engineer, Montgomery "Scotty" Scott, when he needs to be transported back to the Starship Enterprise.
 * After updating House's Securitrons to Mark II, they may say "Obedience Brings Victory". This was one of the main catch phrases used by the Jem'Hadar in Star Trek: Deep Space Nine.
 * During combat, if Marcus is hit by an enemy weapon, he may occasionally cry out, "I am NOT a merry Mutant!" This is a reference to Michael Dorn's role as Worf on Star Trek: The Next Generation, specifically the episode "Qpid", in which Worf protested to being given the role of a "merry man" in Q's Robin Hood recreation. This is also a reference to Fallout 2, as Marcus says the same line as the Chosen One's companion.
 * When dealing with The Kings in Freeside for Ambassador Crocker if you have the Wild Wasteland trait, Ambassador Crocker will tell you "Damn it, I'm an ambassador, not a doctor!" It's a clear reference to the "I'm a doctor, not a {type of profession}" line of quotes from Leonard "Bones" McCoy in Star Trek.

Star Wars

 * The Wild Wasteland trait adds an encounter in the town of Nipton. If you follow the road from city hall east, you will find a burning house with the skeletal remains of Owen and Beru, Luke Skywalker's uncle and aunt who were burned by stormtroopers in A New Hope.
 * The challenge "...And Know Disintegrations" is a play on Darth Vader's line in The Empire Strikes Back.
 * During the quest You'll Know It When It Happens, Ranger Grant asks you to report what has happened at the top of the guard post when you kill a Legion assassin, one of the dialog options when responding to him is to say "Everything's fine up here, thank you. How are you?." This is a reference to A New Hope, when Han Solo says the same thing while he and Luke Skywalker rescue Princess Leia from the Death Star.

The Man Who Broke the Bank at Monte Carlo
The Courier Who Broke the Bank is a reference to Joseph Jagger (1830–1892), a British engineer who was widely known as The Man Who Broke the Bank at Monte Carlo.

The Rat Pack
The group of actors/singers of the 1960s, the Rat Pack, made up of Frank Sinatra, Dean Martin, Sammy Davis, Jr., Peter Lawford, and Joey Bishop, is poked fun at by the Rad Pack Revue, the group of entertainers working at The Aces theatre in The Tops. Frank Sinatra and Dean Martin both performed songs used in Fallout: New Vegas.

The Simpsons
The Radiation King company is the manufacturer of the Simpsons' television on the cartoon of the same name.

The Treasure of the Sierra Madre
The theme, location, climate, and design of Sierra Madre is loosely based on the 1948 flim The Treasure of the Sierra Madre. The film is about prospectors hunting for gold in Sierra Madre, threatened by bandits, elements, and worst of all, personal greed.

The Wizard of Oz

 * In Boulder City when Victor meets up with the player, if the player responds with "I don't like being followed." Victor will say "Now now, its not my fault that Dorothy and the Tin Man happened to be on the same yellow-striped road, is it?"
 * In Old World Blues Dr. Mobius refers to a group of murderers who were looking for a heart, a brain and courage, or a spine which they had all along.

Their Eyes Were Watching God
The character Jeannie May Crawford is a reference to Janie Mae Crawford, the main character of the book Their Eyes Were Watching God, by Zora Neale Hurston.

Tootsie Roll Pops

 * The quest The Legend of the Star is a reference to a decades-old rumor regarding Tootsie Roll Pop wrappers that dates back to the 1930s. Some Tootsie Roll Pops come packaged in wrappers that depict a boy dressed like a "wild west Indian", shooting an arrow at a star. Ever since the wrappers were found, rumors have circulated that there is some kind of secret prize attached to sending in wrappers. In the 1980's the Tootsie Roll company began replying to queries about the wrappers with a short story entitled "The Legend of the Indian Wrapper" that forms the basis for the story Festus tells the player upon the completion of The Legend of the Star.
 * The terminal entries found in Sunset Sarsaparilla Headquarters depict the Sunset Sarsaparilla company capitalizing on a similar rumor about star caps.

VALVe Corporation

 * There is a terminal with a message about “A spy, one of the Reds pretending to be a Blue”, a possible reference to the Spy from Team Fortress 2.

United States nuclear weapons program
The weapons mod Fat Man Little Boy kit references the code names of the atom bombs dropped on Nagasaki and Hiroshima. The reasons for the names were that Fat Man was an implosion-style device with a spherical core, while Little Boy had a longer and slenderer gun-type mechanism. This reference caused the game to be censored in Japan.

Up to Eleven
During the quest Ant Misbehavin', when asked by Loyal about what frequency a sonic emitter would need to have to kill mutated ants, with insufficient Science skill, the player can suggest to "turn it up to eleven". This is an idiom, coined in one scene from "This is Spinal Tap", referring to the act of exploiting something to its utmost abilities. The idiom itself is a reference to the volume setting on a guitar amplifier, the maximum of which is usually 10, and by "turning it up to eleven", one goes beyond the maximum.

Vegas Vic
Victor's name as well as the image used for his face is based on Vegas Vic.

Wasteland
As a word used during the terminal unlock mini-game the word Cochise appears, a reference to Base Cochise the final stronghold in the game Wasteland.

Watchmen
The graffiti found at Hoover Dam and occasional loading screens say "spirit of 2277" which is a reference towards the spirit of '77 in Watchmen chapter 8: Old Ghosts.

World War I and II propaganda
The are similar to propaganda from the WW1 and WW2 eras.

W.B.Yeats
In the underpass near the Nipton Road Reststop there is a piece of graffiti which states "The centre cannot hold", a quote from the Irish poet WB Yeat's poem "The Second Coming."

X-Men
Adamantium Skeleton is a reference to Wolverine. This perk was carried over from Fallout 3.