Bananas

This is one of Woody Allen's earliest movies, and I'd rank it probably 2nd out of his pre-Annie Hall movies, only behind Love and Death. It's certainly one of his funniest. The plot is pretty ridiculous (a neurotic product tester goes to the fictional San Marcos and ends up joining the rebels and eventually becoming president), but it's really secondary, and only serves to provide transitions from one comedy skit to another.

It's pretty much a hit and miss movie, but when he hits (which is more often than not), it's very funny. There are plenty of hilarious one liners throughout. The music is very cheesy as well, but it fits in well with the silly humor. Obviously, this isn't like Woody's later movies, just take it for what it is -- a silly comedy -- and I don't think you'll be disappointed.

Also of note, the opening credits are very funny and rivals Monty Python and the Holy Grail for best opening credits sequence.