I saw "The Dark Knight" this morning -- review to come later -- and Heath Ledger is indeed as remarkable as the trailers and the buzz have indicated. Having seen a lot of his previous work, I kept wondering where within himself he found this performance. It's a radical departure, and suggests that he might have done other great things had he lived. But given the trickiness of the acting life, he might never have found a part this good again, either. So if he had to go, this is the kind of performance you want to go with.