Publicity for the Dark Knight is popping up everywhere. To wit: Wizard has an interview with director Christopher Nolan. Nolan has some good things to say about the whole thing, but is very praising of Heath Ledger:

It’s nothing like we expected at all, which is just fantastic. It’s very hard to describe and very hard to pin down. He’s just got an incredible range to the voice and the way in which he uses it. It goes from being quite high-pitched and eccentric to having these sort of moments of extraordinary anger and power where you just feel this guy’s anger at things. He’s very charismatic, but really quite frightening.