Ok, so who's seen it? Not me yet, but soon. Everyone I've talked to here has said they loved it and that Heath Ledger was amazing. Too bad this was his last role, he probalby would have really become a blockbuster star after this.
On a side note, the fighting style used in the movie is called Keysi. I took a Keysi seminar last week with the 2 founders Justo Dieguez and Andy Norman who are shown in this video. I also met Paul Jennings who did the stunt coordination for Batman Begins and The Dark Night. I went all fangirl on him and got his autograph on my gear bag. So anyway, it was a pretty intense seminar, but it was fun!
http://www.youtube.com/watch?v=_roNl6i1OGcThis is after the seminar and I look like hell.
With Andy Norman co-founder of KFM (Keysi fighting method)

With Paul Jennings stunt coordinator for Dark Night
