The Big Bang Theory (2007– )
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The Extract Obliteration 

Penny enrolls in a college class and keeps it a secret from Leonard. Sheldon causes conflict with Dr. Stephen Hawking over an online game.

Director:

Mark Cendrowski

Writers:

Chuck Lorre (created by), Bill Prady (created by) | 7 more credits »
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On TV

Airs Wed. Jan. 23, 8:30 PM on TBS

ON DISC

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Cast

Episode complete credited cast:
Johnny Galecki ... Leonard Hofstadter
Jim Parsons ... Sheldon Cooper
Kaley Cuoco ... Penny
Simon Helberg ... Howard Wolowitz
Kunal Nayyar ... Raj Koothrappali
Mayim Bialik ... Amy Farrah Fowler
Melissa Rauch ... Bernadette Rostenkowski
Stephen Hawking ... Stephen Hawking (voice)
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Storyline

Sheldon and Stephen Hawking begin playing a popular online game Words with Friends. When he stops responding to their game, Sheldon begins obsess about being ignored. Meanwhile, Penny goes back to school by taking a history class at the local community college. First she doesn't tell Leonard about it. After he finds out about it, he rewrite her paper while she was asleep making her mad. Penny wants to prove that she is more than a waitress. Written by laird-3

Plot Summary | Plot Synopsis

Genres:

Comedy | Romance

Certificate:

See all certifications »
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Details

Country:

USA

Language:

English

Release Date:

1 November 2012 (USA) See more »

Company Credits

Show more on IMDbPro »

Technical Specs

Runtime:

Sound Mix:

Dolby Digital

Color:

Color

Aspect Ratio:

16:9 HD
See full technical specs »
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Did You Know?

Trivia

Howard tells Sheldon and Raj about an argument he had with Professor Stephen Hawking. Hawking claimed that Johnny Depp starred in "The Matrix" while Howard disagreed. Johnny Depp was considered for the part of "Neo" in "The Matrix" before the part went to Keanu Reeves. See more »

Goofs

On Sheldon's Melting Rubik's Cube shirt, it shows the orange, white and yellow cube in the corner. Since white and yellow are on opposite sides of the Rubik's Cube, these colors could never be seen at the same time on a cube. See more »

Quotes

[first lines]
Raj Koothrappali: Try to keep up, Howard; I'm killing it.
Howard Wolowitz: Yeah, I wish we looked this cool dancing in clubs as we do right now.
Leonard Hofstadter: Don't worry, this is exactly how you look when you're dancing in clubs.
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Crazy Credits

CHUCK LORRE PRODUCTIONS, #397 CENSORED BY ME (by myself)

I've decided to save everybody a lot of unhappiness and not submit this week's vanity card to the CBS censors (I know when I've crossed the line with these things and don't need a bunch of corporate lawyers getting their cotton blend panties in a bunch). Accordingly, I've banished the offending card to that dark place where all my offending cards go - the internet. See more »

Connections

References Star Wars: Episode IV - A New Hope (1977) See more »

Soundtracks

Empire Today
(uncredited)
Performed to the tune of "Y.M.C.A."
Music by Jacques Morali
[Howard and Raj dance to the song while watching Kinect Star Wars (2012) in Leonard and Sheldon's living room]
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