208 - The Lizard-Spock Expansion
Aired November 17, 2008

The Lizard-Spock Expansion

A smitten Wolowitz attempts to impress the new love of his life, Dr. Stephanie Barnett, but instead crashes the Mars Rover into a ditch. When the guys arrive to help Howard out of his predicament, Stephanie finds herself more interested in Leonard and promptly leaves with him.

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Guest Stars: Sara Rue as Stephanie, Carol Ann Susi as Mrs. Wolowitz

Writers: Bill Prady (Story), Dave Goetsch (Teleplay), Jennifer Glickman (Teleplay)

Director: Mark Cendrowski

Viewers: 9.76 million Households Rating: 6.1/9 Adults 18-49 Rating: 3.8/10

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Episode Notes

  • The title references the expansion of the classic Rock Paper Scissors game with the Lizard & Spock options. Sheldon and Raj were playing Rock Paper Scissors Lizard Spock at the start of the episode.
  • This episode marks the first of three appearances of Sara Rue as Dr. Stephanie Barnett.

> Rock Paper Scissors Lizard Spock

When Sheldon and Raj can't agree about what to watch on TV, with Sheldon favoring Saturn 3 and Raj wanting to watch Deep Space Nine, Raj suggests they settle it with a game of Rock Paper Scissors. Sheldon thinks they should play Rock Paper Scissors Lizard Spock instead, as there is a lower chance that the game will end in a tie.

This title of this episode, The Lizard-Spock Expansion, references the game and its mention by Sheldon.

Quotes (18)

Sheldon: Scissors cuts paper, paper covers rock, rock crushes lizard, lizard poisons Spock, Spock smashes scissors, scissors decapitates lizard, lizard eats paper, paper disproves Spock, Spock vaporizes rock, and as it always has, rock crushes scissors.

Stephanie: So, how was your day?
Leonard: You know, I'm a physicist, I thought about stuff.
Stephanie: That's it?
Leonard: I wrote some of it down.

Sheldon: I'm sorry but I'm not going to watch the Clone Wars TV Series until I've seen the Clone Wars movie. I prefer to let George Lucas disappoint me in the order he intended.

Sheldon: Rock - Paper - Scissors - Lizard - Spock

Sheldon: I believe the appropriate metaphor here involves a river of excrement and a Native American water vessel without any means of propulsion.


When Sheldon, Leonard and Raj can't agree on what to watch on TV, they engage in a game of Rock Paper Scissors Lizard Spock to decide. Howard enters wearing an eye patch - his latest pick-up strategy. Later that night, Howard calls to tell them he's got a problem at the Mars rover lab. When the guys visit the lab, Howard explains he crashed the Mars rover while trying to impress a woman, Dr. Stephanie Barnett, he picked up at a bar.

After Howard asks Leonard to drive Stephanie home, Leonard and Stephanie kiss passionately in the car. Leonard feels guilty about it but is assured by Stephanie that he had no chance with her. Back at the lab, the guys fail to get the Mars Rover out of the ditch and instead turn to Plan B: delete all security files and run away.

After a news broadcast about the Mars rover situation, Penny asks Howard whether he worked on that project, but he strongly denies it. Leonard asks to talk to Sheldon in private. Leonard tells Sheldon he's going out and he would like the others not to know where he's going. Leonard goes to Dr. Stephanie's apartment where they begin making out. At the same time, Howard leaves a number of messages on her voice mail.

When Penny notices Leonard has new clothing, she asks who he's seeing. Leonard explains his situation and Penny assures him he's not a bad person for seeing Stephanie. Leonard goes to Howard's to tell him that he's seeing Stephanie, but he's unable to tell him before she calls and lets Howard know. Back at the apartment, Howard won't talk to Leonard or Stephanie, until she offers to set him up with her roommate for a group date.

Another news report on the Mars rover reveals the device may have found the first data suggesting there's life on mars, but they will never know who was responsible for the discovery.

Comments (20)

kris Belgium, 17:35 Jan 25 2013.
where i can see this show
big bang theory fan United Kingdom, 12:19 Sep 12 2012.
i want to learn the rock, paper, scissors, lizard, spock rules
Natalya United States, 19:29 May 4 2012.
Probably one of the best episodes ever!
pammie Philippines, 22:47 Oct 11 2011.
epic rock,scissors,paper lizard spock!!!!!
Manu Germany, 19:29 Jun 30 2011.
@JWS: Thank you for making me understand the triple-A-joke without google-ing!
JWS United States, 21:02 May 10 2011.
@Bazinga!: That'd be a good idea for an episode. My favorite moment in this episode is the AAA dialogue when Sheldon & Raj are trying to help Howard get the Rover unstuck. For those of you outside the USA, AAA or Triple-A, is the largest auto club in the United States. I found it HILARIOUS that Raj would make the ridiculous suggestion about them helping get the Mars Rover out.
Bazinga! United States, 14:02 May 6 2011.
Now that Sara Rue has lost so much weight they need to bring her back for an episode to show Leonard what he could have had if he would have stayed with her character.
BBT fan United States, 17:53 Dec 24 2010.
BBT is jst awesome.. i never get sick of it, no matter how much i watch it. Sheldon really does deserve a nobel prize.. but not for proving string theory xD
JeSSe United States, 03:26 Sep 22 2010.
Did anyone even notice that everyone in this episode everyone has a lisp?
Say yeah Maldives, 01:05 Aug 8 2010.
yeah! its freaking awesome.

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