'Big Bang Theory' Cast Musical?

Hollywood’s hottest triple-threats take to the stage for The Alzheimer Association’s annual A Night at Sardi’s event, which features the stars singing and dancing in the name of charity! Last night, Kristen Bell, Zachary Levi, Idina Menzel, Taye Diggs and The Big Bang Theory cast were just a few of the famous faces who lent their voices to the event.