There are a constellation of “Perfect Movies”, here goes: Airplane!, Clue, Young Frankenstein, History of the World Part One, Planes, Trains, and Automobiles, Mannequin, Jeffery, Noises Off, Deathtrap, The Man With Two Brains… there are more for sure… but those are the ones that come off the top of my head.
Post-Answer Update: And of course, how could I forget, The Kentucky Fried Movie!
Stripes, of course!
"Convicted? No, never convicted."