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The Big Bang Theory

Episodes

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 1 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 2 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 3 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 4 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 5 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 6 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 7 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 8 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 9 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 10 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 11 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 12 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 13 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 14 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 15 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 16 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 17 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 18 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 19 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 20 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 21 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 22 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 23 image

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.

Where to Watch
The Big Bang Theory, Season 11 Episode 24 image