I love so many movies that I never have just one favorite of anything. Here are a few:
Dr. Strangelove (or, How I Learned to Stop Worrying and Love the Bomb): Oh my, where do I begin? From Peter Sellers' hilarious portrayal of 3 (yes, 3) different characters to the unforgettable imagery of Slim Pickens riding the nuclear bomb to its target. Unbelievable black comedy from Stanley Kubrick!
Anything Else: It's a Woody Allen movie with Jason Biggs and Christina Ricci, about a guy whose indecisiveness keeps him trapped in unproductive relationships and a sexy young woman who can't commit. I think Woody Allen writes some of the best comedic dialogue ever. I guess what some would consider "intellectual" humor.
The 40-Year Old Virgin: Steve Carell is sweet and shy as the man who's never had sex. This is a hilarious movie with an unexpected result - I actually cared about the characters and what happened to them. Humor with a soul? Unheard of.
Arsenic and Old Lace: Cary Grant is a hoot in this movie about a newlywed who discovers that his sweet old aunts are in the habit of murdering their lonely tenants! "Insanity runs in my family... it practically gallops."
Anchorman - Will Farrel in an impressive ode to improvisational humor. I can't believe they actually got this movie made - I'd have been laughing too hard to get the words out.