Read the opening post.

My suggestions, in no particular order:

Airplane! (Classic comedy, pretty much anything with Leslie Nielsen is hilarious, which brings me to my next movie)
Naked Gun
Grandma's Boy (PLEASE TELL ME YOU'VE SEEN THIS SPECTOR)
40 Year Old Virgin
Both Harold and Kumar movies
Kingpin
Revenge of the Nerds
Dazed and Confused
Anchorman
Office Space
Friday
Rolling Kansas

.... I could keep going.