Watched this last night. Thought it was very good, but I still prefer Ledger's and Hamill's takes on the character. I liked the idea of going with his laughter as an uncontrollable condition rather than an annoying trait but I actually found his waaaaay more annoying than the others I've watched
Anyway, it was good for an origin story but I've always considered characters like this to be the most engaging when they're in the throes of their crimes.