Adventure Time is one of the deepest, creepiest, funniest, best shows featuring severe psychological distress known to man.

For your extraterrestrial viewing needs, Stacker ranked the top 30 alien movies, according to their IMDb user rating.

The Terminator, The Fly, Aliens, Blade Runner, Akira, and more make up our list of the best hard sci-fi movies of the '80s.