The Big Bang Theory
Comedy

Synopsis
Despite their on-again, off-again relationship in the past, Leonard believes he's found true love with Penny.
Catch this title and similar content under these categories: Classics, New on KrisWorld, Comedy, Complete Seasons, Awards Showcase
Cast: Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Melissa Rauch
Language: English
Episodes
The Matrimonial Momentum (S09, Ep1)
After driving to Vegas to get married, Penny struggles with Leonard's confession that he kissed another girl.
In English
20m
The Separation Oscillation (S09, Ep2)
Leonard confronts the woman he kissed on the North Sea in an attempt to set Penny's mind at ease.
In English
19m
The Bachelor Party Corrosion (S09, Ep3)
The guys' science skills are put to the test when they get a flat tire during Leonard's bachelor party.
In English
19m
The 2003 Approximation (S09, Ep4)
When Penny and Leonard announce they're moving in together, Sheldon decides to revert back to 2003.
In English
19m
The Perspiration Implementation (S09, Ep5)
Sheldon finds himself in an awkward position when Kripke expresses interest in Amy.
In English
19m
The Helium Insufficiency (S09, Ep6)
In the midst of a nationwide helium shortage, Sheldon and Leonard take desperate measures.
In English
19m
The Spock Resonance (S09, Ep7)
While being interviewed for a documentary about Spock, Sheldon struggles to suppress his emotions.
In English
19m
The Mystery Date Observation (S09, Ep8)
With Amy out on a date with a mystery man, Sheldon enlists the help of Howard and Raj to find a girlfriend.
In English
19m
The Platonic Permutation (S09, Ep9)
Sheldon and Amy try hanging out as friends when they spend Thanksgiving together at the Aquarium.
In English
21m
The Earworm Reverberation (S09, Ep10)
After his desperate attempts to remember the name of a song stuck in his head, Sheldon has a revelation.
In English
21m
The Opening Night Excitation (S09, Ep11)
After more than five years of dating, Sheldon and Amy spend their first night together.
In English
21m
The Sales Call Sublimation (S09, Ep12)
Penny gets more than she bargained for when Leonard agrees to meet with a psychiatrist on her behalf.
In English
18m
The Empathy Optimization (S09, Ep13)
After having to deal with Sheldon being sick, Leonard, Penny and the gang try to treat themselves.
In English
19m
The Meemaw Materialization (S09, Ep14)
Sheldon's thrilled when his Meemaw comes to visit, but his excitement fades when she butts heads with Amy.
In English
19m
The Valentino Submergence (S09, Ep15)
Sheldon and Amy host a special live Valentine's Day episode of "Fun with Flags."
In English
20m
The Positive Negative Reaction (S09, Ep16)
When the gang finds out about Bernadette's pregnancy, they celebrate by singing karaoke.
In English
19m
The Celebration Experimentation (S09, Ep17)
After more than nine years together, the gang finally celebrates Sheldon's birthday with a few special guests.
In English
19m
The Application Deterioration (S09, Ep18)
Penny, Amy and Bernadette give Raj dating advice.
In English
19m
The Soldier Excursion Diversion (S09, Ep19)
When Sheldon's laptop dies, it leads him to share a deep secret with Amy. Raj sells out Leonard and Howard.
In English
21m
The Big Bear Precipitation (S09, Ep20)
Sheldon spills a secret of Leonard's when the two take a weekend cabin trip with Penny and Amy.
In English
19m
The Viewing Party Combustion (S09, Ep21)
When a small argument between Leonard and Sheldon erupts into a heated fight, everyone must take sides.
In English
18m
The Fermentation Bifurcation (S09, Ep22)
The gang goes to a wine bar and runs into Penny's old boyfriend, Zack; Bernadette gets stuck.
In English
20m
The Line Substitution Solution (S09, Ep23)
Sheldon hires Stuart to spend the day with Amy when he'd rather go to a movie screening.
In English
18m
The Convergence Convergence (S09, Ep24)
Leonard's recently divorced parents and Sheldon's devoutly religious mother come to town.
In English
20m