Nolan's second installment of his Batman series is phenomenal as a whole. There were a few minor problems with it that I saw, but I can easily overlook them thanks to the stellar performance of Heath Ledger, who truly stole the show; if he doesn't get an Oscar nod for this performance, I'll be extremely shocked. The film sets itself up for another installment, now the only thing I have to think about is how long it will take Christopher and Jonathan Nolan to write the screenplay.
Overall, great movie and I highly suggest you drop whatever it is you are doing right now and go see it. You won't be disappointed I'm sure.