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

Slideshow posted in Photos | Friday, March 22, 2013

3 of 51: From left, actors Johnny Galecki, Kunal Nayyar, Mayim Bialik, Jim Parsons, Melissa Rauch, Simon Helberg and Kaley Cuoco, from the cast of 'The Big Bang Theory,' pose backstage at the 21st Annual 'A Night at Sardi's' to benefit the Alzheimer's Association at the Beverly Hilton Hotel on Wednesday, March 20, 2013 in Beverly Hills, California. ( Photo / John Shearer / Invision for Alzheimer's Association / AP Images)

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