Watch S9, EP17: The Celebration Experimentation with Fubo for $0 Today
For the first time in nine years, the gang celebrates Sheldon's birthday -- surprising him with a special guest.
For the first time in nine years, the gang celebrates Sheldon's birthday -- surprising him with a special guest.
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The Big Bang Theory
S1, EP4 "The Luminous Fish Effect"Getting fired gives Sheldon the opportunity to explore life beyond physics, but when he spends his time weaving ponchos and acting like a shut-in, Leonard calls Sheldon's mother for assistance.
The Big Bang Theory
S11, EP10 "The Confidence Erosion"Sheldon and Amy try to use math to eliminate wedding planning stress; Koothrappali "breaks up" with Wolowitz after realizing he is hurting his confidence.
The Big Bang Theory
S11, EP12 "The Matrimonial Metric"Sheldon and Amy subject their friends to a series of secret experiments to discover which two would be most qualified to be the best man and the maid of honor at their wedding; Penny reveals her true feelings about Amy.
The Big Bang Theory
S11, EP13 "The Solo Oscillation"Sheldon kicks Amy out to work solo; Amy and Leonard bond during a series of science experiments; Bert replaces Wolowitz in the band; Sheldon finds Penny a surprising source of scientific inspiration.
The Big Bang Theory
S11, EP9 "The Bitcoin Entanglement"Sheldon tries to teach the guys a lesson after they cut him out of a potentially valuable investment; a seven-year-old video reveals a secret about Leonard and Penny's relationship.
The Big Bang Theory
S11, EP8 "The Tesla Recoil"Leonard and Wolowitz are furious when they learn Sheldon worked with the military behind their backs; Bernadette suspects Ruchi is trying to steal her job.
The Big Bang Theory
S11, EP7 "The Geology Methodology"Sheldon tries to keep his collaboration with Bert a secret; Penny and Bernadette coach Koothrappali on navigating his relationship with Ruchi.
The Big Bang Theory
S11, EP6 "The Proton Regeneration"Sheldon auditions for the role of the new Professor Proton; Penny takes care of Halley when Bernadette and Wolowitz need bed rest.
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