The Big Bang Theory (2007– )
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The Cooper Extraction 

While Sheldon is at home in Texas, the rest of the gang decorate for Christmas and think about how much he has affected their lives.



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Episode complete credited cast:
Mary Cooper (voice)
Debbie Wolowitz (voice)


Just as he is about to head to the airport, Sheldon decides to tell his friends that he is going to Texas to fill in for his brother-in-law at his sister's at home baby delivery. With Sheldon away, his friends decide to have a Christmas tree decorating party at Sheldon and Leonard's place. The fact of Sheldon not being there and having a discussion about the movie It's a Wonderful Life (1946), the gang hypothesizes about what their collective lives would have been like if they didn't know Sheldon, most specifically if Leonard didn't move in to Sheldon's apartment. Beyond the fact that many of them wouldn't have ended up even knowing each other let alone those that ended up as couples, each person interjects a little of what they like to think would have happened to each person as each story progresses. Written by Huggo

Plot Summary | Plot Synopsis


Comedy | Romance


TV-14 | See all certifications »




Release Date:

12 December 2013 (USA)  »

Company Credits

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Technical Specs


Sound Mix:


Aspect Ratio:

16:9 HD
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Did You Know?


Title Reference: The members of the gang consider how their lives would be different if Sheldon is taken out of the picture. See more »


Amy is explaining that without Sheldon, Penny never would have met Stan Lee. While she does this, she draws an arrow on the whiteboard in blue. Moments later, the arrow is black. See more »


[first lines]
Penny: [Penny and Amy are skiing to a video game] Alright, you're really good at this.
Amy Farrah Fowler: Well, I have an extremely low center of gravity. Like a pyramid.
Penny: How you doing over there?
Leonard Hofstadter: Well, I hope it's just a sprain. I cannot walk into that ER with another video game injury.
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Crazy Credits


I feed my dog every morning.

Today he bit me on the hand.

I guess he didn't get the memo. See more »


References Psycho (1960) See more »


Happy Birthday to You
Written by Mildred J. Hill and Patty S. Hill
Performed by Mayim Bialik
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User Reviews

She wants to live in stone age but a cave isn't available..
13 December 2013 | by See all my reviews

This just might be the funniest episode of Big Bang Theory ever..

Whats life without Sheldon?

Go find out. Because its certainly doesn't get easy as his friends think. The humor in this episode matches the levels of panty piñata polarization, electric can opener fluctuation and scavanger vortex which are my most favourite episodes of the series. Sheldon's dialogues from this episode will be remembered for a long time. All the characters have gotten some really hilarious dialogues. But obviously that's just my thought.

What do you think? What do you think? What do you think?

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