Just saw it. Pretty good. I loved the roof-top camera work, and Eckhart was excellent. Ledger lived up to billing, even though his Joker voice really started to bother me by the end of the movie. I can't say it's a Oscar worthy performance, but it was certainly way better than I had hoped and expected.
Overall, the movie felt a bit long. I found myself checking my watch a few times--never a good thing. I will want to see it again for sure, but my first impression is that this was a very solid movie, but a step down from Begins.