Young Frankenstein (1974) dir. Mel Brooks
This film is supposedly a classic and it's definitely groundbreaking in the parody genre. But Mel Brooks made this after Blazing Saddles, so it feels disappointing. A lot of jokes are hilarious but also so silly that they fall into the guilty pleasure bin, rather than the classic comedy one. Still, it's a very, very good movie. Gene Wilder seems amateurish, but all the women in the movie (Madeline Kahn, Cloris Leachman, Teri Garr) are well cast. Marty Feldman is unforgettably insane as Igor.