The Big Bang Theory (2007– )
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The 43 Peculiarity 

Leonard feels threatened after hearing about Penny's study partner at school, while Howard and Raj become determined to find out one of Sheldon's secrets.



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Howard has noticed that Sheldon disappears for exactly twenty minutes every afternoon at exactly the same time without telling anyone where he's going or what he's doing. The twenty minutes is listed as free in his calendar. And when Howard and Raj ask him indirectly about that twenty minutes, he evades the question. So Howard and Raj go on a single minded mission to find out where he's going and what he's doing that is so secretive. They try to piece together the evidence they find, but will it lead them to an answer? Leonard isn't joining them in this quest since he's got his own mission. Penny has befriended Cole, a British exchange student in her History class who Leonard is certain is trying to hit on her. Although trusting her somewhat, jealous Leonard does whatever he can to stop Cole indirectly from being her friend (which he equates to hitting on her) so that Penny won't even be tempted. But Leonard himself may be tempted from who to him is an unlikely source. Written by Huggo

Plot Summary | Plot Synopsis


Comedy | Romance


TV-PG | See all certifications »




Release Date:

15 November 2012 (USA)  »

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Technical Specs


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Aspect Ratio:

16:9 HD
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Did You Know?


It was after the taping of this episode had wrapped that the cast and crew performed a flash mob to surprise the producers. The flash mob was choreographed by Kaley Cuoco-Sweeting's sister, Bri. At first the cast pretended to not know what was going on, but quickly joined in the dance, with the exception of Jim Parsons; who at the request of Kaley, stayed in character through the whole thing and once everything settled down, uttered his trademark word, "Ba-zinga!". See more »


In the cafeteria Leonard says that Sheldon goes to the bathroom at 8.00 a.m with optional follow up at 1.45 however in s2, e23 "The Monopolar Expedition" Sheldon says that everyone at the university knows that he has breakfast at 8.00 a.m and moves his bowels at 8.20. See more »


Sheldon Cooper: You may not realize it, but I have difficulty navigating through certain aspects of daily life: understanding sarcasm, feigning interest in others, not talking about trains as much as I'd want to. It's exhausting! Which is why, for 20 minutes a day, I like to go down to that room, turn my mind off and do what I need to do to recharge.
Howard Wolowitz: But what do you do in there?
Raj Koothrappali: What does 43 mean?
Sheldon Cooper: You don't need to know. You don't deserve to know. And you will never know.
Raj Koothrappali: Yeah? Well, I know how to make...
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Crazy Credits


I got nothin'. See more »


References Star Trek (1966) See more »


The Big Bang Theory Theme (Instrumental)
Composed and Performed by Barenaked Ladies
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User Reviews

Glad to see it going back its roots
16 November 2012 | by See all my reviews

Now i have to say over the last few years the big bang theory has taken a turn for the worst , with them all moving on with girlfriends/getting married and so forth , but it was nice to see Howard and Raj team up again to find out what it is Sheldon is doing during his unscheduled time during his day. Needless to say the episode was fantastic some might say the funniest episode since season 3 , me and my girlfriend where in fits of laughter and if your a fan of the older seasons it might be refreshing to note the writers are heading back in the direction we all loved from the previous seasons.

I wont bother including spoilers for the episode , it was very funny well thought out and the best episode of the season!

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