When Wolowitz seduces Penny's friend and takes over her apartment, Penny sleeps on Leonard and Sheldon's couch. With Wolowitz preoccupied, the guys discover they are without a fourth member of their group and in desperation, they ask Penny to join their Halo team.
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US Ratings: 9.37m viewers. Nielsen Rating: 5.8/8. Nielsen 18-49 Rating: 3.7/9.
Guest Stars
Brooke D'Orsay as Christy, James Hong as Chen, Carol Ann Susi as Mrs. Wolowitz
Writers
Chuck Lorre (Story), Bill Prady (Story), Lee Aronsohn (Teleplay), Jennifer Glickman (Teleplay)
Director
Mark Cendrowski
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Leonard: (While playing Halo) Wow Penny, you're on fire!
Penny:Yeah, so is Sheldon!
Sheldon: I'll watch the last 24 minutes of Doctor Who, although at this point it's more like Doctor Why Bother.
, 11:11 25th Apr 2010.
, 10:41 4th May 2009.