How to Hitchhike, ft. Clark Gable
I just watched It Happened One Night (1934), starring Clark Gable and Claudette Colbert. It is shockingly good! I usually don't laugh out loud at movies when I'm by myself — let alone movies that are over 70 years old — but this one is totally great. According to IMDb, that bastion of truth, it was the first film to win an Oscar "grand slam": Best Picture, Best Actor, Best Actress, Best Director, and Best Screenplay. Spare a couple minutes and enjoy this scene.
IMDb also says that at least two Looney Tunes characters found inspiration in this movie. You can totally see Bugs Bunny in this clip.