The Big Bang Theory - The Infestation Hypothesis
5.02 - The Infestation Hypothesis Aired September 22, 2011
A fight between Sheldon and Penny leaves Amy caught in the middle, while Leonard tries to spice up his long-distance relationship with Priya.
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Guest Stars: Aarti Mankad as Priya, Brian George as Dr. Koothrappali, Alice Amter as Mrs. Koothrappli
Writers: Bill Prady (Story), Steven Molaro (Story), Maria Ferrari (Story), Chuck Lorre (Teleplay), Jim Reynolds (Teleplay), Steve Holland (Teleplay)
Director: Mark Cendrowski
Viewers: 14.65 million Households Rating: 8.7/14 Adults 18-49 Rating: 5/14
Quotes (9)
Penny: (Answering the door to Sheldon) What's up, buttercup?
Penny: (Answering the door again) What's the word, hummingbird?
Penny: (And again) What's the gist, physicist?
Amy: You are aware that your ritualistic knocking behavior is symptomatic of Obsessive-Compulsive Disorder?
Sheldon: Is not. Is not, is not.
Amy: Denial. Denial, denial.
Episode Pictures (6)
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Comments (72)
kimber 
, 12:13 Apr 11 2012.
, 12:13 Apr 11 2012.i love it keep up the good work! would not change a thing about it
Sophie 
, 18:01 Oct 26 2011.
, 18:01 Oct 26 2011.Old married couple!! Why do you tease us so hard writers??
Splinter , 01:56 Oct 25 2011.
, 01:56 Oct 25 2011.Starting to jump the shark, guys. Too much diversion from the original characters and going into 'personal' lives. I liked it when Raj and Howard were only seen at the University and in Leonard/Sheldon's apartment and the comic book store. Now it's too much off of the established path. And now people are saying that they want to SEE Howard's mother ... ?? !!! ??? DON"T DO IT !!!
ali 
, 17:33 Oct 11 2011.
, 17:33 Oct 11 2011.what is in the chair?!
Shaily 
, 14:20 Oct 5 2011.
, 14:20 Oct 5 2011.Oh lord i have never laughed so hard before! The french kissing scene between Howard and Raj was unbelievable! There is not much in this region that could make me laigh so i have to thank you Chuck Lorre and Bill Prady for making my third world experience a happy one!
The robot hand is stuck on you what?! 
, 12:06 Sep 29 2011.
, 12:06 Sep 29 2011.Still funny as hell!!
Try to mix it up a little but as I read the upcoming episodes, it's going to be ok. (really want to c miss walowitz)
Keep it up guys!!
Alex 
, 06:50 Sep 29 2011.
, 06:50 Sep 29 2011.A bit dissapointed with the new episodes, I hope it will get better
BAzinGaaa 
, 02:01 Sep 29 2011.
, 02:01 Sep 29 2011.To the writers!! Buck up...after watching the second episode i am almost certain that u have ran out of jokes and gud lines..too much excitement for 5th season went all in vain..feel pretty stupid.
s16 
, 01:42 Sep 28 2011.
, 01:42 Sep 28 2011.Great show, good lines. Leonard is over Penny but is Penny over Leonard. She said she made a mistake breaking up but isn't doing anything about it - except making it worse. Long distance doesn't work (without a serious commitment) get Priya back.
Dr Yinka 
, 05:23 Sep 27 2011.
, 05:23 Sep 27 2011.Nice beginning to a new season
