The Big Bang Theory: Season 5, Episode 13

The Recombination Hypothesis (19 Jan. 2012)

TV Episode  |  TV-14  |   |  Comedy
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Reviews: 2 user | 1 critic

Leonard and Penny contemplate reviving their romantic relationship.



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Episode complete credited cast:
Penny (as Kaley Cuoco)


After thinking about it long and hard, Leonard decides to ask Penny out on a real date again, which not only garners a shocked reaction from Penny, but the same from the rest of their mutual friends. Penny accepts Leonard's date request. While Bernadette and Amy give Penny their two cents worth of advice, Howard and Raj give Leonard theirs. After what can be described as a disastrous date, Leonard and Penny make a decision on what to do about whether or not to get back together again. Much of their decision is based on Penny's assertion that Leonard over-thinks everything. An action by Leonard shows just how much he over-thinks everything. Meanwhile, Sheldon contemplates whether or not to keep the "Zachary Quinto" life-sized cardboard cutout of Spock he received, when he really ordered the "Leonard Nimoy" Spock. And a clueless Sheldon, while playing a game with Howard and Raj, has no idea his comments are laced with sexual innuendo. Written by Huggo

Plot Summary | Plot Synopsis







Release Date:

19 January 2012 (USA)  »

Company Credits

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Technical Specs


Sound Mix:


Aspect Ratio:

16:9 HD
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Did You Know?


This episode marks the 100th episode of the show, which began airing on September 24 2007, with the Pilot episode. See more »


[first lines]
Leonard Hofstadter: Feel like trying something new for dinner? Maybe indian? Tex-Mex?
Sheldon Cooper: You ever wonder how humans would be different if they evolved from lizards instead of amammals?
Leonard Hofstadter: Okay, let's talk about that.
Sheldon Cooper: As you know, lizards, cold-blooded animals, lack the ability to sense temperature, but they do move more sluggishly when it's cold. So, lizard weathermen would say things like, "Bring a sweater. It's slow outside". I love my mind.
Leonard Hofstadter: We all do. Now, how about dinner?
Sheldon Cooper: Oh, I would assume we'd enjoy ...
See more »

Crazy Credits

CHUCK LORRE PRODUCTIONS, #374 ONE HUNDRED EPISODES Babies were born, people got married, people got divorced, people died, people were hired, fired, quit, homes were bought, expensive cars were leased, tears were shed, harsh words were spoken, fear, dread, resentment, jealousy, frustration and rage came and went like clouds in the sky. The only constant was laughter. We laughed a lot. We hope you did too. From everyone at The Big Bang Theory, thank you for watching. Oh, I almost forgot! Bill Prady went on a food delivery system, lost twenty pounds and started tucking in his shirt. See more »


References Star Trek (2009) See more »


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

I most definitely loved this "The Recombination Hypothesis" ep of "The Big Bang Theory"
15 November 2012 | by (Baton Rouge, La.) – See all my reviews

OMG! This was the most hilarious ep of "The Big Bang Theory" that I've seen so far! And it's only the one hundredth! I mean, Sheldon says "wood" and "erection" and doesn't get the double entendres that Howard and Raj obviously do! Anyway, the whole ep has Leonard and Penny agreeing to a dinner date and the results of the aftermath. Both Bernadette and Amy approve but for different reasons and neither can agree on what kind of clothing Penny should wear. Oh, and Sheldon got his Spock cardboard cutout...but it's not the classic one but the latest one, if you know what I mean. So on that note, "The Recombination Hypothesis" ep of "The Big Bang Theory" is very highly recommended.

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