"""The Junior Professor Solution"" -- The tension between Penny (Kaley Cuoco-Sweeting, left) and Bernadette (Melissa Rauch, right) gives Amy a chance to play both sides, on THE BIG BANG THEORY, Monday, Sept. 22, 2014 (8:30-9:00 PM, ET/PT), on the CBS Television Network. Photo: Michael Ansell/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved"
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