THE BIG BANG THEORY Episode 7.21 Promo The Anything Can Happen Recurrence

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THE BIG BANG THEORY Episode 7.21 Promo The Anything Can Happen Recurrence : When Sheldon tries to be spontaneous, it leads to unexpected friction between Penny, Amy and Bernadette, on THE BIG BANG THEORY, Thursday, April 24 (8:00-8:31 PM, ET/PT) on the CBS Television Network.