skyjedi2005 said:

I thought Mark Hamill said Arkham Asylum was the last time he would do the joker voice over and suddenly the trailer for the second game has his voice, hmmm.

Did they already do a dubbing session while he was there during the making of the first game or do i detect a little white lie.

I doubt it was "a little white lie". When Hamill said it would be the last time he'd do the Joker voice, he probably didn't expect the game to get a sequel. Or maybe it is left over audio from the first game. Man, what is with the fast turn over of sequels these days? The first game just came out.