The Dark Knight" is an unexpectedly dark, menacing, and frightening movie. It's disturbing.
It should have been rated "R" and was, actually rated "R" until the producers lobbied the rating board over 5 times to change the rating. DO NOT BRING CHILDREN UNDER 14 TO THIS MOVIE!
Its commentary on human motivation and almost complete lack of morality is beyond hopelessness and despair.
The movie is also terrifyingly violent. The goriest violence, thankfully, cut away just before actually showing it, is none-the-less grotesque and horrible. There are monster-like characters, and images of human torture and mutilation.
While the writing intellectually addresses issues of psychology, the focus is only on the twisted nature of the characters, practically ignoring the nobler traits of the characters, particularly Batman. This causes the viewer to feel unbalanced and "lost" in the dark labyrinths of the characters' minds. One is also left with the distinct impression that Batman is just as twisted and valueless as the “bad guy”, leaving the viewer disillusioned and sad.
There are some redeeming moments in the movie, when human nobility and honor shine through. The Morgan Freeman character maintaines his integrity throughout, as does Gary Oldman’s character, along with a few other minor characters.
The performances, particularly of Heath Ledger, are intense and brilliant: almost too brilliant. "The Joker" is no joke, and one is left with the idea that one could interchange that character with any real life maniac: remove the character of "The Joker" and insert Osama bin Laden or Hitler, etc.
The cinematography was good - dark and at times lush, but not fabulous. Other "Batman" movies, such as the George Clooney "Batman" had much more brilliant and creative cinematography.
Of course, all of the "Bat" gizmos are great and the action sequences well done.
Do NOT bring children to this movie. PLEASE! It will leave them with horrifying images and concepts that they will not be able to process. The intensity of the violence, darkness, and pathos of the movie is completely and totally unsuitable for children, even up to 16, but definitely too disturbing for anyone under 14 or 15. There were little children in the theater when I saw the movie which was distracting because their little minds were being subjected to, especially for them, terrifying and confusing content. This movie is for mature audiences only.