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Jon St. John Really Wants to Play the Joker, Hear His Demo Reel Exclusively on GodisaGeek

by Benjamin Maltbieon June 21, 2013
He's pretty good at it, too

Watch As Mark Hamill Makes Funny Voices For The Joker In DCUO’s The Last Laugh DLC

by Colm Ahernon June 18, 2012
SOE released a video which shows Mark Hamill, Arleen Sorkin and Adam Baldwin behind-the-scenes for DC Universe Online's DLC, The Last Laugh.