I'm way behind when it comes to seeing old, classic movies. Today, while home sick, I watched "Sullivan's Travels" based on a recommendation from Jeff Dowd, the guy I posted about earlier.
A lot of times humor doesn't age well, but this movie had me laughing out loud quite a bit. It does a great job of combining witty satire with gags and other physical comedy. If you're not normally into older comedies, but are willing to give one a chance, this would be a good one.