During a road trip to visit famous UFO sites, two sci-fi geeks encounter a wisecracking alien named Paul who is on the run from federal agents.
Back to the Future
Back to the Future Part II
Back to the Future Part III
Paul
Galaxy Quest
Spaceballs
The Hitchhiker's Guide to the Galaxy
Idiocracy
G.O.R.A.
The Adventures of Buckaroo Banzai Across the 8th Dimension