Big Bang Theory Stills

"The Skank Reflex Analysis" -- Amy (Mayim Bialik, left) and the gang deal with the aftermath of Penny (Kaley Cuoco, right) and Raj's night together, while Sheldon takes command of the paintball team, on the fifth season premiere of THE BIG BANG THEORY, Thursday, Sept. 22 (8:00-8:31 PM, ET/PT) on the CBS Television Network.  
Photo: Cliff Lipson/CBS
©2011 CBS Broadcasting Inc. All Rights Reserved. Big Bang Theory

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