So many to choose from, but off the top of my head:
The Life of Brian
The Meaning of Life
The Holy Grail (in that order)
Blazing Saddles
The History of the World Part (())
The Kentucky Fried Movie
Haiku Tunnel
Spaceballs
Airplane
The Wraith
Clash of the Titans (Original 80's version)
A Clockwork Orange
Any Hitchcock Movie
Sneakers
War Games
Electric Dreams
Takedown (aka Trackdown)
Half Baked
Faster ****cat, Kill, Kill!
Goonies
Temple of Doom
Raiders of the Lost Ark
Die Hard
A River Runs Through It
Chitty, Chitty, Bang, Bang
Willy Wonka and Chocolate Factory (original)
The Doors
The Wall
Spies Like Us
Attack of the Killer Tomatoes
Tron (original)(sequel blew chunks)
Escape from New York
Big Trouble in Little China
All of the "Dirty Harry" Movies
Up in Smoke
Nice Dreams
Beverly Hills Cop
Ferris Bueller's Day Off
Revenge of the Nerds
Vacation
European Vacation
Christmas Vacation
Christine
Most of Kubrick's stuff
Better Off Dead (how could I leave that one out?)
Office Space
Clerks
Home Alone
A Christmas Story
Disorderlies
Ghostbusters
Stand By Me
One Flew Over the Cuckoo's Nest
The Graduate
Young Frankenstein
Trading Places
Animal House
American Psycho
American Beauty
Tommy Boy
The Naked Gun
Scrooged
Beetlejuice
One Crazy Summer
...I'll try to stop now...wait...one more...