About this showing of The Big Bang Theory
Penny's ex, Zack, and his wife want a baby, but when Zack is infertile, they ask Leonard to help. Raj attempts to mend things with his ex-fiancée.
Previously on TV
The Big Bang Theory
The Propagation Proposition
Previously shown on TLC on Tue 8 Sep 2026 at 11:00.
This showing has ended
This showing was on TLC at 11:00 on Tue 8 Sep 2026. See future airings below or open the main programme page for the latest TV times.
Airing details
ChannelTLC
StartsTue 8 Sep 2026, 11:00
EndsTue 8 Sep 2026, 11:30
Episode / edition: The Propagation Proposition
Next showing of The Big Bang Theory
The next currently listed showing is Tue 8 Sep 2026, 17:30 on TLC.
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