Buck Privates - Abbot and Costello

Airplane is the first movie I saw where I actually laughed out loud. Later on, it was Happy Gilmore. There have obviously been other funny movies that I've seen, but these 2 stand out.

Agreed. Also with OT's pick.

Add:
Some Like it Hot
Mrs. Doubtfire
Stripes
Big
Fast Times at Ridgemont High
Raising Arizona
Tootsie

Dang it! How the heck did I forget about these two! Definately these are on my list!!!

Little Miss Sunshine

Team America

Old School

Tommy Boy

the funniest scene i think i've ever seen..."come on everybody. we're going streaking!!! come on, snoop. snoop a loop. bring your green hat."

Yea, that was a good one...love classics

Wife says "Abbot and Costello" in "Meet the Mummy"..

Yea almost forgot about Animal House...I'd have to put that one up in the upper part of my list.