The Big Bang Theory (2007–2019)
3 user 1 critic

The Terminator Decoupling 

On a train to San Francisco, Howard, Raj and Leonard fight for the affections of sci-fi star Summer Glau, while Sheldon is forced to turn to Penny for help when he leaves his flash drive behind.


Mark Cendrowski


Chuck Lorre (created by), Bill Prady (created by) | 4 more credits »




Episode complete credited cast:
Johnny Galecki ... Leonard Hofstadter
Jim Parsons ... Sheldon Cooper
Kaley Cuoco ... Penny
Simon Helberg ... Howard Wolowitz
Kunal Nayyar ... Raj Koothrappali
Summer Glau ... Summer Glau
George Smoot ... Dr. George Smoot
Robert Clotworthy ... Train Conductor (voice)


Leonard, Sheldon, Howard and Raj are all taking a train trip to San Francisco to attend a symposium, at where the scheduled keynote speaker is Nobel Prize winning physicist Dr. George Smoot. Leonard, Howard and Raj, who all wanted to travel by plane instead, change their mind about taking the train when they see on board the beautiful Summer Glau, who they recognize from her role in Terminator: The Sarah Connor Chronicles (2008). Howard and Raj argue about who between the two has the right to hit on her, Raj who would need to take a trip to the bar car first. Meanwhile, Sheldon has forgotten an electronic file at the apartment he deems important for Dr. Smoot. After Leonard talks him out of getting off the train to go back to retrieve it, Sheldon decides on the slightly less abhorrent option of telephoning Penny to email it to him, which would entail Penny entering his (gasp) bedroom. Written by Huggo

Plot Summary | Plot Synopsis


Comedy | Romance


TV-PG | See all certifications »

Did You Know?


Sheldon (Jim Parsons)'s room is frequently seen with different comics in the bins on the shelves, and framed above the bed. This episode got BOTH. The set include:
  • Justice League #82 (November 1993 issue) in the bins
  • Detective Comics #685 (March 1995 issue) in the bins
  • Green Lantern Annual #1 (June 1992 issue) in the bins
  • Legends of the DC Universe #38 (March 2001 issue) in the bins (2nd shelf)
  • Superman/Batman #13 variant, framed over the bed
  • Identify Crisis #1 (August 2004 issue) framed over the bed
  • Identity Crisis #4 (November 2004 issue) framed over the bed
  • Identity Crisis #7 (February 2005 issue) framed over the bed
See more »


The view from the window as the characters are boarding the train is shot at the Burbank (Bob Hope) Airport, several stops from where they live in the series. The train then departs heading southbound, away from San Francisco. See more »


[first lines]
Howard Wolowitz: Okay, Raj, hand me the number six Torx screwdriver.
Sheldon Cooper: Stop! We can't do this; it's not right.
Rajesh Koothrappali: Sheldon, you have two choices; either you let him put a bigger hard drive in the TiVo, or you delete stuff before we go out of town.
Sheldon Cooper: But once you open the box, you've voided the warranty. The warranty is a sacred covenant we've entered into with the manufacturer; he offers to stand by his equipment, and we in return agree not to violate the integrity of the internal hardware. This little orange...
See more »

Crazy Credits

CHUCK LORRE PRODUCTIONS, #243 Trying to get a break as a song writer I find out where Harry Nilsson lives and bring him a box of reel-to-reel tapes of my original songs. He threatens to kill me if I ever come to his house again. Not funny then, funny now. While working at Marvel Animation I'm told I don't have what it takes to write for the Muppet Babies. Sadly, it's true. Not funny then, funny now. Write French Kissin' in the USA which is covered by Debbie Harry and released as the first single for her debut solo album. It effectively ends her solo career. Not funny then, funny now. Co-write theme song for new animated series called Teenage Mutant Ninja Turtles. The show is a massive international success. The music publisher tells my partner and I that we will not be paid music royalties for the millions of video games and video cassettes being sold. The reason we are given is that they'd rather not pay us. Not funny then, still not funny. See more »


References Battlestar Galactica (2004) See more »


History of Everything (Instrumental version)
Written by Barenaked Ladies
Performed by Barenaked Ladies
[Instrumental version of series theme song played over the closing credits]
See more »

User Reviews

One of my favorite episodes of Big Bang Theory!
29 October 2020 | by vineet_proSee all my reviews

Somehow, this episode of big bang theory caught my attention while seeing one of the many re-runs of big bang theory, running on different channels. Something, about it being shot out of their home, in a moving train, Sheldon showing off his knowledge about trains, Howard being as desperate as ever, Raj coming into his element with alcohol suddenly becoming charming and event somewhat arrogant with the guest star of the show, really makes one must watch and somewhat under-rated episodes of the show. And also another reason why first few seasons, were really special and got all of us so much attached to the show.

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Release Date:

9 March 2009 (USA) See more »

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Sound Mix:

Dolby Digital



Aspect Ratio:

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