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The Classified Materials Turbulence

Episode 22 | Season 2  (2008-2009)
(Airdate May 4, 2009)

Things begin to look up for Leonard when Penny calls out Leonard's name while making out with Stuart on their second date. Meanwhile, Wolowitz enlists his friends' help when he discovers a critical design flaw in his project for NASA.

Guest Stars
Season 2 (2008-2009) Guide