Animal House vs. Caddyshack
Both movies fit in the whole (as Leonard Maltin put it) mold of late '70s-early '80s SNL/John Landis/Ivan Reitman/Harold Ramis lead goofy comedies that focused (for better or worse) on the aspects of showcasing "irreverence and destruction". I don't know which movie would best fit in as the third part (e.g. Meatballs, Blues Brothers, Stripes, or even Ghostbusters, which felt like the ultimate culmination if anything, if it all) of a possible trilogy.
http://www.imdb.com/title/tt0083131/board/flat/147865318?d=152610819#1 52610819