David Denby of The New Yorker doesn't much like
"The Dark Knight," which he calls "grim and jammed together." But he writes this about Heath Ledger:
Ledger has a fright wig of ragged hair; thick, running gobs of white makeup; scarlet lips; and dark-shadowed eyes. He’s part freaky clown, part Alice Cooper the morning after, and all actor. He’s mesmerizing in every scene. His voice is not sludgy and slow, as it was in “Brokeback Mountain.” It’s a little higher and faster, but with odd, devastating pauses and saturnine shades of mockery. At times, I was reminded of Marlon Brando at his most feline and insinuating. When Ledger wields a knife, he is thoroughly terrifying (do not, despite the PG-13 rating, bring the children), and, as you’re watching him, you can’t help wondering—in a response that admittedly lies outside film criticism—how badly he messed himself up in order to play the role this way. His performance is a heroic, unsettling final act: this young actor looked into the abyss.
David Edelstein of New York Magazine doesn't like it either