As is often the case with movies, I'll be in the minority here to say that I liked THE DARK KNIGHT very much, more the second time through. Like BATMAN BEGINS, I felt on first viewing that the pieces of the film seemed a bit disconnected from one another, but watching it a second time, I could better appreciate the construction of the film and its impact. I found THE DARK KNIGHT psychologically powerful, burrowing into my consciousness with a razor-like precision that was troubling. To be honest, there was really too much of the Joker for me and not enough Batman, but again, I understood the reasoning behind it, just not what I personally wanted.
The BD is pretty sensational. For those who don't know, the scenes filmed in IMAX have a different aspect ratio on the BD (the DVD retains the 2.40 ratio consistently) from the rest of the film, and they're so involving that they pull you into the movie, the sharpness so spectacular in those scenes that they make your teeth hurt.