 When "Seinfeld" ended in 1998, Richards returned to stand-up comedy.He incited media furor while performing at the Laugh Factory comedy club in late 2006 after a cell phone video was published of him launching into an expletive-laced racist tirade after earlier interruptions from a group of late-arriving audience members.Subsequently, due to significant media coverage of the event, Richards announced his retirement from stand-up early in 2007.