Mod:Yukichigai Unofficial Patch

 (YUP) is a mod for Fallout: New Vegas that works as an unofficial patch for many bugs, exploits, and other such issues not fixed by the final official patch to the game.

Content
The mod's documentation lists over 2500 bug fixes, some of them are:
 * Fixes the Dead Money perk In Shining Armor.
 * Corrects the female mesh for the Pimp-Boy 3 Billion so that it's not held at an angle.
 * Fixes Boone's head tracking and stops him from holstering his weapon every 5 seconds in combat.
 * Alters Fixer so that it cures addiction temporarily as it says, not permanently.
 * Alters Ultrajet addiction so it can now be cured by doctors.
 * Prevents NPCs and creatures that start dead from resurrecting.
 * Ensures the Brotherhood of Steel Explosive Collar won't detonate after it's removed.
 * Prevents the Old World Blues trait Skilled from being taken then removed, which would leave a permanent +5 to all skills.
 * Fixes various Honest Hearts quests that could move the game time forward by a full year if the current month was February.
 * Prevents companions from drinking Nuka-Cola Quartz and Nuka-Cola Victory, which would give the player Low-Light Vision.
 * Fixes the Keith's Caravan Charade quest so it cannot be repeated for Experience Points.
 * Prevents Fisto from giving 10 caps every time its services are declined.

The full list of fixes can be found in the mod's Docs page.