I haven't seen Trading Places in a while. Time for another look at Jamie Lee Curtis and her perfect breasts. And the flick is funny as hell.
A Hard Day's Night (so many great subtle jokes) Clue This is Spinal Tap Ghostbusters (Peter Venkman is probably the funniest character in history of cinema) Pulp Fiction Godfather I and II (I found something new to appreciate every time I watch one of those again). Rear Window These are the first off the top of my head.
Aside from little kid movies (which I had no choice to not watch) I rarely watch a movie twice. Some of my exceptions: Patton Caddyshack Godfather 1&2 The Man Who Shot Liberty Valence Lawrence of Arabia Dazed and Confused Spinal Tap
Don't think I've ever seen Summer Rental, I'm going to check that out soon. Animal House 1941 Clue Space Balls The Money Pit PCU (If you haven't seen it well, you must.) Cocoon Stripes Enemy at the Gates The Musketeer
Rudy Face/Off Added. Thanks for the help. This is helping my wife also. Many of these, she has never seen. Sad day, I know. But I enjoy it.
too many to name and many have been mentioned. Just about any classic comedy movie honorary mention: Fifth Element.