Don't You Think the Joker Laughs at You?

"I've been thinking lately. About you and me. About what's going to happen to us, in the end. We're going to kill each other, aren't we?" The WP's Hank Steuver offers a brief history of the Joker, from Conrad Veidt in The Man Who Laughs to Heath Ledger tomorrow night. If you're headed to TDK absolutely spoiler-free, I'd skip this one -- quite a few plot details herein.