From m0nkeygrl: Dark Knight Teaser II. Very wary of this Joker portrayal. The Joker needs to skim a very fine line between "completely absurd" and "WTF scary" -- this movie seems to be going for "Jack the Ripper meets Cirque de Soliel," which is 99.5% wrong. Really, if done well, the Joker should be somebody who would almost be fun to hang out with, if it weren't for the fact that he keeps killing people.
I also notice Two-Face showing up at the end. Wonder what that's about. Lead-in to Movie III, perhaps.
EDIT: Nevermind, it was a fake. The pic released of Heath Ledger before was real enough, I'm sad to say. Still looks wrong.