The Big Bang Theory: Season 1, Episode 10

The Loobenfeld Decay (24 Mar. 2008)

TV Episode  |  TV-14  |   |  Comedy
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Ratings: 8.2/10 from 1,719 users  
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Leonard lies to Penny so that he and Sheldon can get out of watching her perform. However, Sheldon believes that the lie has too many loose ends, so he comes up with a new, unnecessarily complex one to replace it.



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Episode complete credited cast:
Penny (as Kaley Cuoco)
Toby Loobenfeld (as D.J. Qualls)


Penny has the role of Mimi in a one-day workshop stage production of Rent, and asks Leonard and Sheldon if they want to go see her perform. Based on hearing Penny sing badly, Leonard and Sheldon decline, with Leonard even lying to her to get out of it. Sheldon is feeling uncomfortable in being a part of Leonard's lie, so he takes proactive measures to get out of that lie. Sheldon's actions don't hurt Penny but rather confuse Leonard. But Sheldon takes his proactive measure to the extreme, utilizing the hidden talents of Toby Loobenfeld, a research assistant in the particle physics lab. Written by Huggo

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Release Date:

24 March 2008 (USA)  »

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Did You Know?


Marks the first appearance of Sheldon's trademark knock. Although rather than the usual 3 short knocks, followed by asking someone's name, repeated three times over, it is 4 short knocks, followed by asking someone's name. See more »


Sheldon is a mysophobe, so he would not have taken the packed chicken he threw in the garbage bin for consumption later. See more »


[first lines]
Leonard: No, see, the liquid metal terminators were created in the future by Skynet, and Skynet was developed by Miles Dyson but that future no longer exists due to Dyson's death in Terminator 2.
Sheldon Cooper: Okay. Then riddle me this: assuming all the good Terminators were originally evil Terminators created by Skynet but then reprogrammed by the future John Connor, why would Skynet, an artificial computer intelligence, bother to create a petite, hot, 17-year old killer robot?
Leonard: Skynet is kinky? I dunno.
Sheldon Cooper:
See more »

Crazy Credits

In the opening scroll of the time line when it gets to 91,000 there is a mistake the dates read 93,000BC 92,000BC 91,0009C 90,000BC for some reason 91,000 is a 9c not a BC. See more »


References Terminator 2: Judgment Day (1991) See more »


Out Tonight
Music and lyrics by Jonathan Larson
Performed by Kaley Cuoco-Sweeting
See more »

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User Reviews

The Loobenfeld Decay was a mostly amusing episode of "The Big Bang Theory"
16 April 2008 | by (Baton Rouge, La.) – See all my reviews

Sheldon and Leonard are arguing the logic of the Terminator movies and TV series when they hear some awful singing. It's Penny who tells them she's performing in a local production of "Rent" for one night only and invites them to see her on stage. Leonard mentions that he and Sheldon are going to a symposium that night though Sheldon almost ruins that lie by nearly mentioning the real night of that. After she's gone, Leonard mentions to his roommate why he lied to Penny and the necessities of doing so for social purposes. Sheldon decides to replace that fib for a more complicated one about a cousin who's in rehab. That "cousin" later appears in the form of a fellow colleague/aspiring actor who argues about characterization with Sheldon. Hardly matters since Penny taped her performance and gets Leonard to watch while he leaves Sheldon and the "actor" alone with their bickering...Pretty funny, if not hilarious episode of "The Big Bang Theory". As usual, Sheldon has much of the best lines though D. J. Qualls as the fake cousin steals the few scenes he's in with his constant embellishments. Penny herself has her moments when trying to explain to Howard and Raj the story that Sheldon told about his "cousin". Oh, and as a Filipino born in this country, I was not offended by Qualls "childhood abuse" from a chaplain from that Asian country. Though according to Chuck Lorre's censored vanity card, it was originally supposed to be a Catholic priest! (Again, while Catholic, not offended.) Very glad this show is back.

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