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The Big Bang Theory
S12.E12
All episodesAll
  • Cast & crew
  • User reviews
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IMDbPro

The Propagation Proposition

  • Episode aired Jan 10, 2019
  • TV-PG
  • 20m
IMDb RATING
7.1/10
2.6K
YOUR RATING
Johnny Galecki and Jim Parsons in The Big Bang Theory (2007)
ComedyRomance

Penny's ex-boyfriend Zack learns that he is infertile, so he asks Leonard for help; Koothrappali attempts to mend things with his ex-fiancee Anu.Penny's ex-boyfriend Zack learns that he is infertile, so he asks Leonard for help; Koothrappali attempts to mend things with his ex-fiancee Anu.Penny's ex-boyfriend Zack learns that he is infertile, so he asks Leonard for help; Koothrappali attempts to mend things with his ex-fiancee Anu.

  • Director
    • Mark Cendrowski
  • Writers
    • Chuck Lorre
    • Bill Prady
    • Maria Ferrari
  • Stars
    • Johnny Galecki
    • Jim Parsons
    • Kaley Cuoco
  • See production info at IMDbPro
  • IMDb RATING
    7.1/10
    2.6K
    YOUR RATING
    • Director
      • Mark Cendrowski
    • Writers
      • Chuck Lorre
      • Bill Prady
      • Maria Ferrari
    • Stars
      • Johnny Galecki
      • Jim Parsons
      • Kaley Cuoco
    • 8User reviews
    • 3Critic reviews
  • See production info at IMDbPro
  • See production info at IMDbPro
  • Photos62

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    Top cast13

    Edit
    Johnny Galecki
    Johnny Galecki
    • Leonard Hofstadter
    Jim Parsons
    Jim Parsons
    • Sheldon Cooper
    Kaley Cuoco
    Kaley Cuoco
    • Penny Hofstadter
    Simon Helberg
    Simon Helberg
    • Howard Wolowitz
    Kunal Nayyar
    Kunal Nayyar
    • Raj Koothrappali
    Mayim Bialik
    Mayim Bialik
    • Amy Farrah Fowler
    Melissa Rauch
    Melissa Rauch
    • Bernadette Rostenkowski
    Brian George
    Brian George
    • Dr. V.M. Koothrappali
    Brian Thomas Smith
    Brian Thomas Smith
    • Zack Johnson
    Rati Gupta
    Rati Gupta
    • Anu
    Lindsey Kraft
    Lindsey Kraft
    • Marissa Johnson
    Shay Ali
    • Greg
    Chip Chinery
    Chip Chinery
    • Bob
    • (uncredited)
    • Director
      • Mark Cendrowski
    • Writers
      • Chuck Lorre
      • Bill Prady
      • Maria Ferrari
    • All cast & crew
    • Production, box office & more at IMDbPro

    User reviews8

    7.12.5K
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    Featured reviews

    5eyefonefoures

    Penny has regrets over Leonard

    Up to this point I get the distinct impression that Leonard is a serves as a safe settle for Penny. Might be wrong but the character has at best lukewarm feelings towards her partner.
    1Scott_the_Scot

    Thank God this series is ending

    The program is dead and should not have gotten a 12th season. Very poorly written with no humour any more
    7pkpera

    This was OK episode

    I did not plan to review this episode, but seeing 2 reviews here - well, I will say what bothered me with them: 1 can not stand Bernadette, other took all it as some anti-baby agenda ... In other words, they really are not reviews, just expressing how can not stand some detail.

    I think that this episode was OK for season 12, better than average in this season. Probably weakest part was Raj's 'romance' - but I think that it was bad from very start. Somehow it leads nowhere, and no way that someone is so stupid. But who knows what are plans for serial finale ? :-)

    Pulling out Zack again was good idea, and that story can be developed over some episodes. And if I'm correct, we are at middle of season 12 - well, if it will be really 24 episodes.
    10phuketboy

    sperm bank

    Sperm bank is needed freely.

    man's natural desire, The Propagation Proposition.

    In Korea that is prohibited strongly. no good
    6Hitchcoc

    More Soap Opera

    The relationship with Raj and that woman is really boring. Zack wants a baby but is infertile and asks Leonard. This leads to more conflict. I haven't anything to say about it. Just rather uninteresting.

    Storyline

    Edit

    Did you know

    Edit
    • Trivia
      Brian George's final appearance as Dr. V.M. Koothrappali .
    • Goofs
      Sheldon refers to HDFS as "HDFS file system". The "FS" in the abbreviation, actually means "file system", so it is redundant to say it again, especially for Sheldon.
    • Quotes

      Zack Johnson: I asked for the most expensive one they have. They said it was $200 and I said I want a more expensive one. And then, they said it was $300.

    • Crazy credits
      CHUCK LORRE PRODUCTIONS, #608

      Sorry, no vanity card this week. I'm too happy.
    • Connections
      References Love Actually (2003)
    • Soundtracks
      History of Everything
      (uncredited)

      Written by Barenaked Ladies

      Performed by Barenaked Ladies

      [Series theme song played during the opening titles]

    Top picks

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    Details

    Edit
    • Release date
      • January 10, 2019 (United States)
    • Country of origin
      • United States
    • Language
      • English
    • Filming locations
      • Stage 25, Warner Brothers Burbank Studios - 4000 Warner Boulevard, Burbank, California, USA(Studio)
    • Production companies
      • Chuck Lorre Productions
      • Warner Bros. Television
    • See more company credits at IMDbPro

    Tech specs

    Edit
    • Runtime
      20 minutes
    • Color
      • Color
    • Sound mix
      • Stereo
    • Aspect ratio
      • 16:9 HD

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