Midnight Science Fiction Feature!

Midnight Science Fiction Feature! is the main intro quest in the Fallout: New Vegas add-on Old World Blues.

Quick walkthrough

 * 1) Go to the Mojave Drive-in.
 * 2) Wait until midnight.
 * 3) While the movie is playing, activate the crashed satellite.

Detailed walkthrough
After installing the add-on, you will receive a radio signal in the form of a mysterious broadcast about an invitation to the "Midnight Science Fiction Feature!" at the Mojave Drive-in. After arriving, you will quickly notice a crashed satellite in the middle of the drive-in lot. Around midnight, the satellite starts projecting a movie of a peering eye on the Mojave Drive-in's screen. Activating the satellite at this point will bring up the prompt window, explaining that you're about to enter, and won't be able to return until completion. Additionally, it explains that the recommended player level is level 15 and up. Selecting that you are ready will cause you to be teleported to the Big Empty and begin Old World Blues.

Behind the scenes

 * This is most likely a reference to the midnight movies on TV in the USA in the 1950s and in theaters in the 1970s.