So first thing I want to say is that this was a good movie.
But that is about it. It had some awesome themes to it, and showed how far, and how quick, a person can become evil. But who learned anything? The entire theater laughed like crazy when the joker made the pencil "disappear". This movie represented evil perfectly, and everybody enjoyed every second of it...
And honestly who actually wanted to watch Batman? I spent the greater portion of the 150 minutes waiting for the joker scenes, and for Harvey to become Two-Face.
We got our fill of the 'New' Batman a couple years ago, this was all about the joker.
The joker is not considered to be insane, he is thought to be extremely in touch with human nature, but he sees only the worst that humans are capable of.
And for anybody that thinks that Jack did a poor job at depicting the Joker, then they need to go and read some comics, because the joker is a balance of Ledger's and Jack's interpretation. He is supposed to be a person that in one instance he is completely harmless and just wants to have fun, but when you turn you back he goes around blowing up 12 year olds. I left the theatre a little unsatisfied, but would see it again. (Only because Heath gives me a boner.)