A friend recommended this movie to me, and it is the weirdest thing I have watched in my life. I admit, it has some good humour... but the concept is just bizzar. The movie is called Zerophilia, and is about a young guy who finds out that he can switch genders pretty much at will.

As I've said, good humour, good scripting, good actors... just a really strange concept. I'd recommend watching it if the concept doesn't freak you out too much. Because otherwise it is a pretty good film about finding the true you, and that what you think is supposed to be, may not really be what you want.

http://www.imdb.com/title/tt0421090/