Watch The Big Bang Theory Season 3 Episode 9 The Vengeance Formulation 3x9 309 S03 E09

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While Wolowitz does everything he can do to make his new relationship with Bernadette work, Sheldon vows to destroy Kripke after being humiliated on National Public Radio.3x9 309 S03 E09

Watch The Big Bang Theory season 3 Episode 6 - The Cornhusker Vortex

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Sheldon becomes Leonard's teacher in order to understand football, while an incident with flying a kite threatens Howard and Raj's friendship.