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The Big Bang Theory
EpisodesSeason 11 Episode Guide
24 Episodes 2017 - 2018
Season 11 of this comedy series opens moments after last season's finale, with Sheldon (Jim Parsons) proposing to Amy (Mayim Bialik). Meanwhile, Howard (Simon Helberg) and Bernadette (Melissa Rauch) are shocked to learn they are expecting a new child. Plus, Leonard (Johnny Galecki) gets anxious with the prospect that physics research might be at a dead end and eventually depresses Raj (Kunal Nayyar) with this thought as well.
Episode 1
The Proposal Proposal
Mon, Sep 25, 2017 30 mins
Season 11 begins with Amy giving Sheldon an answer to his marriage proposal. Meanwhile, Howard and Bernadette struggle with some unexpected news.
Episode 2
The Retraction Reaction
Mon, Oct 2, 2017 30 mins
Leonard angers the university and the entire physics community when he gives an embarrassing radio interview. Meanwhile, Amy and Bernadette bond over having to hide their success from Sheldon and Howard.
Episode 3
The Relaxation Integration
Mon, Oct 9, 2017 30 mins
Amy records Sheldon talking in his sleep and tries to convince him that he has a more laid-back side. Meanwhile, Koothrappali and Stuart compete to win the heart of Bernadette's new co-worker.
Episode 4
The Explosion Implosion
Mon, Oct 16, 2017 31 mins
Wolowitz and Sheldon bond over their relationships with their disappointing fathers when they drive to the desert to shoot off a model rocket. Meanwhile, Leonard's mother finds a new best friend in Penny, much to Leonard's dismay.
Episode 5
The Collaboration Contamination
Mon, Oct 23, 2017 31 mins
Sheldon and Koothrappali confide in Bernadette when they can't handle Amy and Wolowitz working together. Meanwhile, Penny and Leonard learn new tactics on how to deal with Sheldon and they come from an unlikely source.
Episode 6
The Proton Regeneration
Thu, Nov 2, 2017 31 mins
Sheldon goes head-to-head with Wil Wheaton for the role of the new Professor Proton. Meanwhile, Penny steps in and takes care of Halley when Bernadette and Wolowitz both wind up on bed rest.
Episode 7
The Geology Methodology
Thu, Nov 9, 2017 31 mins
Sheldon and Bert collaborate on a research project, despite Sheldon's embarrassment. Also, Penny and Bernadette coach Koothrappali on how to navigate his relationship with Ruchi.
Episode 8
The Tesla Recoil
Thu, Nov 16, 2017 30 mins
Leonard and Wolowitz are furious after they learn Sheldon went to work with the military behind their backs. Also, while Bernadette is on bed rest, she asks Raj to do some digging when she suspects Ruchi is trying to steal her job.
Episode 9
The Bitcoin Entanglement
Thu, Nov 30, 2017 31 mins
Sheldon tries to teach the guys a lesson after they cut him out of a potentially valuable Bitcoin investment. Also, a seven-year-old video reveals a secret about Leonard and Penny's relationship.
Episode 10
The Confidence Erosion
Thu, Dec 7, 2017 31 mins
Sheldon and Amy try to eliminate stress from wedding planning by applying math to the process. Also, Koothrappali "breaks up" with Wolowitz after realising his best friend is actually hurting his confidence.
Episode 11
The Celebration Reverberation
Thu, Dec 14, 2017 31 mins
Sheldon and Wolowitz plan birthday celebrations for Amy and Halley, respectively. Also, Leonard receives a Christmas letter from his brother that causes him to spiral out about his own lack of accomplishments.
Episode 12
The Matrimonial Metric
Thu, Jan 4, 2018 31 mins
To discover who would be most qualified to be best man and maid of honour at their wedding, Sheldon and Amy subject their friends to a series of secret experiments. Also, Penny reveals her true feelings about Amy.
Episode 13
The Solo Oscillation
Thu, Jan 11, 2018 31 mins
When Sheldon kicks Amy out to work solo, she and Leonard bond during a series of science experiments. Also, Bert the geologist replaces Wolowitz in the band Footprints on the Moon, and Sheldon finds Penny a surprising source of scientific inspiration.
Episode 14
The Separation Triangulation
Thu, Jan 18, 2018 30 mins
Koothrappali finds himself in the middle of domestic drama when he learns the woman he's dating, Nell, has a very upset husband, Oliver. Also, Sheldon rents his old room back for a quiet place to work and drives Leonard crazy by being a model tenant.
Episode 15
The Novelization Correlation
Thu, Feb 1, 2018 31 mins
When Sheldon petitions Wil Wheaton to appear on the new Professor Proton show, Wil offers a role to Amy instead. Also, Penny gets angry when she thinks the female protagonist in Leonard's novel is based on her.
Episode 16
The Neonatal Nomenclature
Thu, Mar 1, 2018 31 mins
When Bernadette won't go into labor, all her friends try different tactics to get things started. Also, Wolowitz confronts Bernadette after Amy accidentally reveals she's already chosen their son's name.
Episode 17
The Athenaeum Allocation
Thu, Mar 8, 2018 30 mins
Leonard jumps through hoops to help secure the perfect wedding venue for Sheldon and Amy. Also, Bernadette and Wolowitz have a hard time deciding who should stay at home with the kids and who should go back to work.
Episode 18
The Gates Excitation
Thu, Mar 29, 2018 31 mins
Penny gets the opportunity to host Bill Gates at work when his company wants to partner with her pharmaceutical company. Also, Leonard, Koothrappali and Wolowitz do everything in their power to meet him, while Sheldon thinks he is the victim of an April Fools prank.
Episode 19
The Tenant Disassociation
Thu, Apr 5, 2018 31 mins
When Leonard learns Sheldon is the president of the tenants association, he decides to run against him. Also, Bernadette encourages Wolowitz and Koothrappali to find the owner of a drone after they find it in the backyard.
Episode 20
The Reclusive Potential
Thu, Apr 12, 2018 30 mins
A brilliant but reclusive scientist, Doctor Wolcott, invites Sheldon to his cabin in the middle of nowhere, and Leonard, Raj and Howard go along for the trip. Also, Penny and Bernadette improvise after Amy doesn't like the tame bachelorette party they planned for her.
Episode 21
The Comet Polarization
Thu, Apr 19, 2018 30 mins
Sheldon's comic book store experiences changes when writer Neil Gaiman puts Stuart's store on the map. Also, Koothrappali takes credit for Penny's astronomical discovery, and friendships are threatened.
Episode 22
The Monetary Insufficiency
Thu, Apr 26, 2018 31 mins
Sheldon goes to Vegas to win money for science. Also, Penny and Bernadette take Amy wedding dress shopping, but her terrible choice entangles them in a web of lies.
Episode 23
The Sibling Realignment
Thu, May 3, 2018 30 mins
When Sheldon learns that his mother won't attend his wedding unless he invites his brother, Georgie, he and Leonard travel to Texas to end a family feud. Also, the Wolowitz kids inadvertently infest Amy, Bernadette, Wolowitz and Koothrappali with pinkeye.
Episode 24
The Bow Tie Asymmetry
Thu, May 10, 2018 30 mins
In the Season 11 finale, when Amy's parents and Sheldon's family arrive for the wedding, everybody is focused on making sure all goes according to plan—everyone except the bride and groom.
