The Big Bang Theory: Season 5, Episode 2

The Infestation Hypothesis (22 Sep. 2011)

TV Episode  -   -  Comedy
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Ratings: 8.2/10 from 1,211 users  
Reviews: 2 user | 1 critic

Amy gets inadvertently caught in the middle of a fight between Sheldon and Penny over a chair. Leonard tries to add some spice to his long-distance relationship with Priya.



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Episode complete credited cast:
Penny (as Kaley Cuoco)


With Priya having moved back to India, she and Leonard decide to try having a long distance relationship, which includes Skyping each other on a regular basis. Howard suggests that they take that communication one step further by having high speed on-line sex with each other. When conventional on-line sex between the two of them fails, Howard has some equipment that he thinks will enhance their on-line experience, which he demonstrates with Raj while an comfortable Leonard looks on. While Leonard and Priya are talking on-line, Sheldon takes refuge in Penny's apartment. Sheldon is in love with how comfortable Penny's new chair is, until he finds out that it is a used chair that she found discarded on the street. A freaked out Sheldon is certain that he has contracted some nasty bug from sitting in the chair, and does whatever he can to make Penny get rid of it. None of Sheldon's tactics works. Something else may make Penny think twice about keeping the chair. Written by Huggo

Plot Summary | Plot Synopsis







Release Date:

22 September 2011 (USA)  »

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:


Aspect Ratio:

16:9 HD
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Did You Know?


Amy describes her and Penny as Best friends, Besties, BFFs, Peas in a Pod or Sisters who would share traveling pants (the last description referencing the movie, The Sisterhood of the Traveling Pants). See more »


When Sheldon freaks out about the new chair, he throws a yellow magazine on the coffee table that moves around between shots. See more »


Leonard Hofstadter: Sheldon, you do this all the time. You fixate on some crazy idea and then blow it way out of proportion.
Sheldon Cooper: Name one time I've ever done that.
Leonard Hofstadter: How about when you put GPS trackers in your garbage because you were convinced North Korean spies were stealing your doodles? The chicken nuggets you were sure were human nuggets. The strangely shaped cloud that was following you around town. The time you put on my shirt by mistake and were convinced you'd growing again.
Sheldon Cooper: I said name one. You really need to ...
See more »


References The Sisterhood of the Traveling Pants (2005) See more »


Big Bang Theory Theme
Composed and Performed by Barenaked Ladies
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User Reviews

More Sheldon being Sheldon in the sophomore episode...
31 May 2012 | by (United States) – See all my reviews

This episode was a strong followup to the first half-hour of the hour-long premiere event. We open with Leonard preparing for a via-Skype dinner date with Priya, despite the significant time zone difference. Sheldon is not shy about the ridiculousness of that arrangement, but he courteously decides to hang out at Penny's apartment kicking off both stories of the episode. Sheldon is pleased with Penny's new chair until learning that it had been in the garbage. I still laugh hysterically when Penny shoves the chair cushion in Sheldon's face to get him to stop badgering her. And I was pleased to see some hints of the "old Howard", turning Leonard on to cybersex, also setting up another comic moment in the "ersatz homosexual marriage" between Howard and Raj and Leonard's efforts having hilariously disastrous results.

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