March 11, 2013 09:32 AM PDT
The Monster Isolation
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âÂÂThe Monster Isolation” — Penny (Kaley Cuoco, left) actually impresses Sheldon with her acting skills, on THE BIG BANG THEORY, Thursday, Feb. 21 (8:00 â 8:31 PM, ET/PT) on the CBS Television Network. Also pictured: Riccardo LeBron Photo: Monty Brinton/CBS é2013 CBS Broadcasting, Inc. All Rights Reserved.
