Firstly, I have to voice my support for the growly-Batman voice. It never annoyed me.
I agree with those who said the movie was too long. I'm not against long movies in principle, but I don't think The Dark Knight
needed to be that long. There was a repetative pattern of "Joker does horrible thing, good guys scramble to respond." I think we should have jumped to the Joker's capture quicker--make the movie more streamlined. Yeah, and the Gordon death thing was unnecessary.
The action scenes could have been more clearly shot. The last fight when he's using his white-eyes ran a little long, I think. And the rooftop fall was ridiculous.
I was glad to read reviews of Maggie Gyllenhaal's performance being better than Katie Holmes (who I didn't that did that bad a job, she just looks eternally twelve.) However, I couldn't get any
sense of character from Rachel in this film. I also think we needed to get a better sense of Rachel and Harvey's relationship.