Anyone here a movie buff? What's your favorite genre (or movie)?

I'm mostly a war movie guy. Movies like Enemy at the Gate, Black Hawk Down, etc. are my favorite. They tell a different story than the normal war flick. Lately though, thanks to TCM and Tivo, I've been watching movies that I just never found the time to watch before. Old Bogart classics like The Maltese Falcon and Casablanca are great. I've been on a Hitchcock kick lately too. Rear Window and Vertigo are good as is my favorite from Hitchcock, North by Northwest. To give you some idea of how far behind I am, I just recently watched Citizen Kane.

So, what do you like? Any movies that you wished you had seen that you never got around to?