The Big Bang Theory (2007–2019)
4 user 2 critic

The Staircase Implementation 

Leonard tells Penny about how he and Sheldon became roommates and what happened to the elevator.


Mark Cendrowski


Chuck Lorre (created by), Bill Prady (created by) | 7 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
Carol Ann Susi ... Debbie Wolowitz (voice)
Ally Maki ... Joyce Kim
Steven Yeun ... Sebastian
Ajgie Kirkland ... Louie
Ed Lieberman ... Announcer (voice)


After Leonard and Sheldon have a heated argument about what Sheldon sees as Leonard making a major breach in the roommate agreement, Leonard takes refuge at Penny's apartment. Despite the seriousness of the argument, Leonard assures Penny that Sheldon was much more difficult to live with when Leonard first moved in. Leonard recounts to her his first meeting with Sheldon seven years earlier when Leonard answered Sheldon's advertisement looking for a new roommate. He also recounts Howard and Raj's first encounters with Sheldon, what happened to the now broken elevator which was working when Leonard first moved in, and why Leonard decided to stay despite Sheldon being such a difficult and unusual roommate. Written by Huggo

Plot Summary | Plot Synopsis


Comedy | Romance


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English | Latin

Release Date:

17 May 2010 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:

Dolby Digital



Aspect Ratio:

16 : 9
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Did You Know?


In this episode we learn that Sheldon and Leonard's apartment has a flag. It bears a logo identical to that of Löwenbräu beer. See more »


When Sheldon and Leonard are first going over the roommate agreement, they finish up the TV and Movies section and then move onto the miscellaneous section, section 9, which would make the TV and movies section, section 8. Then, later, when Sheldon enters the bedroom when Joyce Kim is in bed with Leonard, Sheldon states Leonard is in breach of Section 8, Visitors; Subsection C, Females; Paragraph 4, Coitus, but Visitors shouldn't be section 8, as TV and Movies presumably is. See more »


[to get away from Sheldon, Leonard, Raj, and Howard are getting ready to go to Howard's house]
Sheldon Cooper: Wait, let me get my jacket.
Howard Wolowitz: You're not going with us.
Sheldon Cooper: Why?
Raj Koothrappali: You're the guy we're trying to get away from.
Sheldon Cooper: Oh. Well, in that case, I don't need my jacket. And for the record, the correct syntax is "I'm the guy from whom you're trying to get away."
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Crazy Credits

CHUCK LORRE PRODUCTIONS, #287 CENSORED!!! Apparently, it's okay to show brutal violence in graphic, vomit- your-Jenny Craig dinner-up-into-your-mouth detail on a forensic cop show, but it's unacceptable to write about it with a little whimsy. As always, you can read the offending material on my web site, Frankly, I think you'll be disappointed. See more »


References Firefly (2002) See more »


History of Everything
Written by Barenaked Ladies
Performed by Barenaked Ladies
[Series theme song played during the opening titles]
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User Reviews

An episode I've been waiting for since the beginning!
20 May 2010 | by JeriqueSee all my reviews

Ever since the start of the show, the big question on everyone's mind is "what happened to the elevator?" Finally, in a flashback episode to reveal how everyone met -which are always fun- it is shown why they must walk three flights of stairs.

From start to finish, this episode is a laugh riot and makes your stomach hurt from all the laughing. It's creative and interesting to learn how Leonard comes to live with the freak Sheldon. It's interesting how Sheldon is worse before Leonard arrives and it's great to see that Howard and Raj have always been lovable and quirky.

It would have been interesting to watch the show starting back in 2002 and venturing all the way until Penny moved in and such, but it's a great show and seems to improve with each episode.

23 of 29 people found this review helpful.  Was this review helpful to you? | Report this
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