Jimmy Fallon played host to quite a roster of guests last night on his late night show. Tina Fey fit in one last press appearance before her Date Night, which Buzz loved, hits theaters today. She and Jimmy even reunited with their former SNL costars Amy Poehler and Seth Meyers for the occasion with an active game of charades! Jimmy and Amy first presented the latest edition of his 6-Bee Glee Club, in which they faced off against the Parks and Recreation cast. As if that wasn't enough, Justin Bieber stopped by to talk about his new album and accidentally cause the leak of some video game news — oops! Click through to see all the action.