Apparently only available on the PS3 you can download and play as the joker through the games challenge mode. Now I no how the PS3 crowd usually feels when the us X-boxers get something exclusive. Seems weird to me that they would go through all that trouble to code something and then just release it to a smaller audience. I know Sony and Microsoft pay for exclusive content but it seems to realy just alienate gamers more than drive them towards that particular console.