Scarecrow was in Arkham City? Huh. I did all the storylines, collectables, sidequests and New Game Plus and never came across him.

Also, I echo the voice acting tributes. They were fantastic. Every person I've seen play Joker has been awesome, but for me the 'perfect' Joker has always been the animated variation. Everyone else plays the Joker, while the animated Joker is the Joker.