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The Big Bang Theory
Season 9 · Episode 17
The Celebration Experimentation
7.119mFebruary 25, 2016
After more than nine years together, the gang finally celebrates Sheldon’s birthday, surprising him with a special guest.
Episodes
- Episode 1The Matrimonial Momentum
- Episode 2The Separation Oscillation
- Episode 3The Bachelor Party Corrosion
- Episode 4The 2003 Approximation
- Episode 5The Perspiration Implementation
- Episode 6The Helium Insufficiency
- Episode 7The Spock Resonance
- Episode 8The Mystery Date Observation
- Episode 9The Platonic Permutation
- Episode 10The Earworm Reverberation
- Episode 11The Opening Night Excitation
- Episode 12The Sales Call Sublimation
- Episode 13The Empathy Optimization
- Episode 14The Meemaw Materialization
- Episode 15The Valentino Submergence
- Episode 16The Positive Negative Reaction
- Episode 17The Celebration Experimentation
- Episode 18The Application Deterioration
- Episode 19The Solder Excursion Diversion
- Episode 20The Big Bear Precipitation
- Episode 21The Viewing Party Combustion
- Episode 22The Fermentation Bifurcation
- Episode 23The Line Substitution Solution
- Episode 24The Convergence Convergence