Highlights from the Eleventh Episode of Season 5 of The Big Bang Theory

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Penny's Past

While Leonard comes face-to-face with his high school bully, Bernadette (Melissa Rauch, center) and Amy (Mayim Bialik, right) make Penny (Kaley Cuoco, left) realize she might have been one, on THE BIG BANG THEORY. Photo: Monty Brinton/CBS ©2011 CBS Broadcasting Inc. All Rights Reserved.