The Big Bang Theory

Season 5 Episode 13

The Recombination Hypothesis

Aired Thursday 8:00 PM Jan 19, 2012 on CBS



  • Trivia

    • This episode is rated TV-14-DLS.

    • The opening scene is nearly identical to the opening scene of the pilot episode: Leonard and Sheldon arrive at their apartment and spot Penny doing something in her apartment through her open door, and Leonard goes to talk to her. The characters are even dressed similarly, with Leonard wearing a crimson shirt with a hoodie and Sheldon in a superhero T-shirt and checked pants, and Penny wearing the exact same shirt she wore in the pilot.

  • Quotes

    • Leonard: So, do they have a name for a first date with someone you used to go out with?
      Penny: Ah, that's a good question. How about awkward?

    • Sheldon: This is a disaster! I distinctly ordered the Leonard Nimoy Mr. Spock standee. Why would I feel safer with Zachary Quinto at the foot of my bed?
      Leonard: I don't know. He was pretty bad-ass in Heroes.
      Sheldon: (considers, then shrugs) You're right. I'll give him a shot.

    • Leonard: Penny, do you have plans for dinner?
      Penny: Why? You guys going somewhere?
      Leonard: No, I mean just you and me.
      Penny: You mean, like a date?
      Leonard: Not "like a date." A date.
      Amy and Bernadette: Woooooooh!
      Penny: Um... ah... o-okay, sure.
      Amy and Bernadette: Woooooooh!

  • Notes

    • International Airdates:
      Czech Republic: July 9, 2012 on Prima COOL
      Turkey: October 30, 2012 on CNBC-e
      Finland: April 8, 2013 on Sub

    • This episode's end titles has Chuck Lorre's Vanity Card #374, a thank you to the audience for getting the show to 100 episodes.

  • Allusions