What are some funny, dumb, clic movies?

I'm not talking new stuff like Epic Movie or the Scary Movie sequals. I'm talkin' old stuff like Mel Brooks, but not MB because I have ALL of his movies. I want some fresh (old) blood besides Mel's stuff, Caveman, Little Big Man, and Lust in the Dust. Recommendations, please. I desperately need to add to my collection! Thankoo.