The Propagation Proposition

Name: The Propagation Proposition
Genre: Comedy
Released: January 10, 2019
Cast: Johnny Galecki, Kaley Cuoco, Jim Parsons, Simon Helberg, Melissa Rauch

The Big Bang Theory: Season 12: Episode 12

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The Big Bang Theory

Episode Details & Credits

CBS | Air Date: January 10, 2019

Starring: Johnny Galecki, Kaley Cuoco, Jim Parsons, Simon Helberg, Melissa Rauch, Kunal Nayyar, Kevin Sussman, Mayim Bialik

Summary: Penny's ex-boyfriend, Zack, and his wife want a baby, but when Zack is infertile, they ask Leonard for help. Also, Raj attempts to mend things with his ex-fiancée, Anu.

Creator: Bill Prady and Chuck Lorre

Genre(s): Comedy

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Season 12 Episodes

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S12:E24. The Stockholm Syndrome
Air Date: May 16, 2019
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S12:E23. The Change Constant
Air Date: May 16, 2019
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S12:E22. The Maternal Conclusion
Air Date: May 9, 2019

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Seasons & Episodes

61

Series Overview
Season 12

tbd
- Season 12 Overview
  Air Date: September 24, 2018
- tbd
  S12:E24. The Stockholm Syndrome
  Air Date: May 16, 2019
- tbd
  S12:E23. The Change Constant
  Air Date: May 16, 2019
- tbd
  S12:E22. The Maternal Conclusion
  Air Date: May 9, 2019
- tbd
  S12:E21. The Plagiarism Schism
  Air Date: May 2, 2019
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  S12:E20. The Decision Reverberation
  Air Date: April 25, 2019
- tbd
  S12:E19. The Inspiration Deprivation
  Air Date: April 18, 2019
- tbd
  S12:E18. The Laureate Accumulation
  Air Date: April 4, 2019
- tbd
  S12:E17. The Conference Valuation
  Air Date: March 7, 2019
- tbd
  S12:E16. The D & D Vortex
  Air Date: February 21, 2019
- tbd
  S12:E15. The Donation Oscillation
  Air Date: February 7, 2019
- tbd
  S12:E14. The Meteorite Manifestation
  Air Date: January 31, 2019
- tbd
  S12:E13. The Confirmation Polarization
  Air Date: January 17, 2019
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  S12:E12. The Propagation Proposition
  Air Date: January 10, 2019
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  S12:E11. The Paintball Scattering
  Air Date: January 3, 2019
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  S12:E10. The VCR Illumination
  Air Date: December 6, 2018
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  S12:E9. The Citation Negation
  Air Date: November 15, 2018
- tbd
  S12:E8. The Consummation Deviation
  Air Date: November 8, 2018
- tbd
  S12:E7. The Grant Allocation Derivation
  Air Date: November 1, 2018
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  S12:E6. The Imitation Perturbation
  Air Date: October 25, 2018
- tbd
  S12:E5. The Planetarium Collision
  Air Date: October 18, 2018
- tbd
  S12:E4. The Tam Turbulence
  Air Date: October 11, 2018
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  S12:E3. The Procreation Calculation
  Air Date: October 4, 2018
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  S12:E2. The Wedding Gift Wormhole
  Air Date: September 27, 2018
- tbd
  S12:E1. The Conjugal Configuration
  Air Date: September 24, 2018
Season 11

tbd
- Season 11 Overview
  Air Date: September 25, 2017
Season 10

tbd
- Season 10 Overview
  Air Date: September 19, 2016
Season 9

tbd
- Season 9 Overview
  Air Date: September 21, 2015
Season 8

tbd
- Season 8 Overview
  Air Date: September 22, 2014
Season 7

tbd
- Season 7 Overview
  Air Date: September 26, 2013
Season 6

tbd
- Season 6 Overview
  Air Date: September 27, 2012
Season 5

tbd
- Season 5 Overview
  Air Date: September 22, 2011
Season 4

tbd
- Season 4 Overview
  Air Date: September 23, 2010
Season 3

tbd
- Season 3 Overview
  Air Date: September 21, 2009
Season 2

tbd
- Season 2 Overview
  Air Date: September 22, 2008
Season 1

57
- Season 1 Overview
  Air Date: September 24, 2007