Those with Showtime can check out tonight’s episode of Penn & Teller: Bullshit! at 10:00pm Eastern/Pacific. In this one, the duo of corpulent and silent will go out of their way to ridicule anti-game activists (including the disbarred but not forgotten Jack Thompson) convinced that videogames cause violence. The clip above was snagged from GamePolitics, once (rightly) described as “one of the few sites you must visit every day if you consider yourself serious about …