The Big Bang Theory S9E22
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S09E22 — The Fermentation Bifurcation
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The Big Bang Theory

S09E22 The Fermentation Bifurcation

2016-04-28

The group visits a wine bar and unexpectedly bumps into Penny's ex-boyfriend, Zack. Meanwhile, Bernadette finds herself spending the night with Sheldon after she can't join the others for wine tasting, leading to an evening that doesn’t quite unfold as she hoped. Additionally, things take a turn when Koothrappali introduces his new girlfriend, Claire, adding to the night's unexpected twists.

Season 9 Episodes

1
The Matrimonial Momentum
2015-09-21
 2
The Separation Oscillation
2015-09-28
 3
The Bachelor Party Corrosion
2015-10-05
 4
The 2003 Approximation
2015-10-12
 5
The Perspiration Implementation
2015-10-19
 6
The Helium Insufficiency
2015-10-26
 7
The Spock Resonance
2015-11-05
 8
The Mystery Date Observation
2015-11-12
 9
The Platonic Permutation
2015-11-19
 10
The Earworm Reverberation
2015-12-10
 11
The Opening Night Excitation
2015-12-17
 12
The Sales Call Sublimation
2016-01-07
 13
The Empathy Optimization
2016-01-14
 14
The Meemaw Materialization
2016-02-04
 15
The Valentino Submergence
2016-02-11
 16
The Positive Negative Reaction
2016-02-18
 17
The Celebration Experimentation
2016-02-25
 18
The Application Deterioration
2016-03-10
 19
The Solder Excursion Diversion
2016-03-31
 20
The Big Bear Precipitation
2016-04-07
 21
The Viewing Party Combustion
2016-04-21
 22
The Fermentation Bifurcation
2016-04-28
 23
The Line Substitution Solution
2016-05-05
 24
The Convergence Convergence
2016-05-12