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Watch The Big Bang Theory Season 4 Episode 9 online

The Big Bang Theory Season 4 Episode 9 rainierland, Penny asks Leonard to lie to her father, while Howard, Raj and Bernadette pull an all-nighter at a telescope. ...

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The Big Bang Theory Season 4 Episode 10
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Season: 4 Episode: 10

Diffuse: 2010-12-09

Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero. ...

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