In Reign of Fire, the world gets destroyed by dragons and only pockets of humanity are left. The adults are old enough to remember a world before the dragons came but the kids have only know the dystopia all their lives.
Since entertainment as people are used to isn't around any more, a few of the guys will get up and act out scenes from notable movies, including Star Wars.
Also. Sorry, dude. Gotta ask. Who shot first? You or Greedo?