Well, to conclude Arkham City week, here's the one you may have been waiting for - the Joker! I hear that this is sadly Mark Hamill's last crack at the character, which he plays SO masterfully! Arkham Asylum / Arkham City's version of the Joker just looks and sounds fantastic.
Edit - Okay, I'm also getting additional indication that this *may not* end up as Mr. Hamill's last kick at the Joker (and he has indicated that a "Batman: The Killing Joke" audiobook would be something he'd like to be a part of), but I guess we'll have to see. At any rate, I truly consider the Joker his greatest role, even over Luke Skywalker!
Hm, I wonder - do you think he could pull off an older Joker in a live-action "The Dark Knight Returns"?