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The Big Bang Theory (OAD: )

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The Big Bang Theory : The Classified Materials Turbulence


Penny makes a surprising revelation about Leonard while on her date with Stuart; Wolowitz finds a critical design flaw in his NASA project.

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Previous Episode

The Vegas Renormalization

(First Aired: April 27, 2009)

Koothrappali and Leonard take Wolowitz to Las Vegas; Sheldon is forced to bunk with Penny when he gets locked out of his apartment.

Next Episode

The Monopolar Expedition

(First Aired: May 11, 2009)

While Leonard prepares for a three-month science expedition, he and Penny re-evaluate their feelings for each other.