Last night on Conan, Will Arnett dispensed one of the coyest Arrested Development spoiler alerts: Conan O’Brien and Andy Richter — and nobody else on the late night stage, mind you — will be joining the all-star cast in season four. Plus: Zachary Quinto played the perfect spokesperson for young Hollywood’s political exuberance on Chelsea Lately, where he expressed his utter distaste for Mitt Romney, Ann Coulter, and the Romneys’ investment ties to a voting machine company. In fact, during his American Horror Story off-time this weekend, Quinto will be campaigning for Barack Obama in Colorado and Nevada. Also, Tom Hanks delivered a slam-poetic interpretation of the Beach Boys episode on Full House; and Prince performed his latest single, Rock & Roll Love Affair. Watch our compilation to see what you missed.