'Big Bang Theory' cast performs 'Rocky Horror's 'Time Warp' (Photos)

Slideshow posted in Photos | Friday, March 22, 2013

37 of 51: Zachary Levi, third from right, and Keltie Colleen, third from left, perform at the 21st annual 'A Night at Sardi's' benefit for the Alzheimer's Association at the Beverly Hilton Hotel on March 20, 2013. ( Photo / Jordan Strauss / Invision for Alzheimer's Association / AP Images)

Get more: TV