I went to the midnight showing of this movie, and it was totally worth it. I can't review it very well, because that would involve giving away the plot, so I'll just say this:
six out of five stars
Thats how good it was. DO NOT BRING SMALL CHILDREN!!!! This movie is full of very disturbing crap. Heath Ledger did the best performance I've ever seen, and if he doesn't get the oscar, I'm really interested in who did. The joker was a very deeply disturbed person, and Heath didn't fail to amaze. It is a great shame he died.