I saw Blazing Saddles in the theater when it first came out. Laughed my a$$ off. Stayed and watched it again. Also Christmas Vacation is a very funny movie and should be on the list.
honorable mention- Planes trains and automobiles, Stripes, and of course Slapshot.. https://www.youtube.com/watch?v=H1Sx4lxkV5Y
Mel Brooks seeded that movie with all kinds of gags. In the scene where he’s the Indian chief, he’s speaking Yiddish to his tribe. Took me a long time to get it.