CGRtrailers, from Classic Game Room®, presents the “Last Laugh” DLC trailer for DC UNIVERSE ONLINE. Joker has plans for Gotham City and Metropolis in the fourth DLC to be released for the MMORPG. A bevy of DC Comics heroes and villains alike appear, albeit some quickly, in this trailer. The Joker takes center stage and veteran voice actor Mark Hamill (in many minds, the definitive Joker) provides some voice over to truly set the stage for The Clown Prince of Crime's own DLC expansion that is available on June 19, 2012.