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The Big Bang Theory S01E13

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The Big Bang Theory : The Bat Jar Conjecture

S01, E13 ()

When Sheldon tries to prove his mental superiority as they train for the Physics Bowl, the guys kick him off the team and bring his nemesis (Sara Gilbert) aboard.

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Previous Episode

The Jerusalem Duality

S01, E12 (First Aired: April 14, 2008)

Sheldon and Leonard look for a way to derail a 15-year-old physics prodigy's research.

Next Episode

The Nerdvana Annihilation

S01, E14 (First Aired: April 28, 2008)

Leonard and the guys buy a time machine prop from a classic movie; Penny tells the guys their obsession with comics and toys is pathetic.