The BatmanArkhamCity YouTube page just put up a pretty cool video that shows Kevin Conroy (the voice of Batman) and Mark Hamill (the voice of Joker) recording a voice over session. Talia’s voice actor, Stana Katic, also makes an appearance in the video.
It’s always entertaining to see the process behind what ends up sounding so good and believable. I hope future Batman games, cartoons, etc., continue to support the duo.