The Big Bang Theory

1The Proposal Proposal

21 minSep 25, 2017★ 7.4

In the eleventh season opener, Amy gives Sheldon an answer to his proposal while Howard and Bernadette struggle with some unexpected news.

2The Retraction Reaction

21 minOct 2, 2017★ 6.9

Leonard angers the university – and the entire physics community – after he gives an embarrassing interview. Also, Amy and Bernadette bond over having to hide their success from Sheldon and Howard.

3The Relaxation Integration

20 minOct 9, 2017★ 6.8

Sheldon and Amy struggle with picking a wedding date, which stresses out Sheldon and causes him talking in his sleep. Meanwhile, Raj and Stuart fight over the attention of one of Bernadette's co-workers.

4The Explosion Implosion

21 minOct 16, 2017★ 6.9

As Howard worries about fatherhood, he and Sheldon bond when they jointly assemble a model rocket. Meanwhile, Penny bonds with Leonard's mother, Beverly, much to his concern.

5The Collaboration Contamination

19 minOct 23, 2017★ 7.0

Sheldon and Raj confide in Bernadette when they can't handle Amy and Howard working together on a science project. Also, Penny and Leonard learn new tactics for how to deal with Sheldon from an unlikely source.

6The Proton Regeneration

21 minNov 2, 2017★ 7.0

Sheldon goes head-to-head with Wil Wheaton for the role of the new Professor Proton. Also, Penny steps in to take care of Halley when Bernadette and Howard both wind up on bed rest.

7The Geology Methodology

20 minNov 9, 2017★ 7.2

Sheldon and Bert collaborate on a research project, despite Sheldon’s embarrassment. Also, Penny and Bernadette coach Raj on how to navigate his relationship with Ruchi.

8The Tesla Recoil

19 minNov 16, 2017★ 6.9

Leonard and Howard 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 that Ruchi might be trying to take over her projects at work.

9The Bitcoin Entanglement

19 minNov 30, 2017★ 7.2

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.

10The Confidence Erosion

21 minDec 7, 2017★ 6.9

Sheldon and Amy try to eliminate stress from wedding planning by applying math to the process. Also, Raj “breaks up” with Howard after realizing his best friend is actually hurting his confidence.

11The Celebration Reverberation

20 minDec 14, 2017★ 6.8

Raj and Howard's feud continues as the gang plan Halley's first birthday party. Sheldon's surprise for Amy's birthday goes awry when they get food poisoning. Also, Leonard gets a Christmas letter from his brother that causes him to spiral out about his own lack of accomplishments.

12The Matrimonial Metric

20 minJan 4, 2018★ 6.9

Sheldon and Amy try to pick their Best-Man and Maid of Honor by experimenting on the gang.

13The Solo Oscillation

21 minJan 11, 2018★ 6.9

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.

14The Separation Triangulation

19 minJan 18, 2018★ 6.8

Raj finds himself in the middle of domestic drama when he learns the woman he's dating, has a very upset husband. Also, when Sheldon rents his old room back for a quiet place to work, he drives Leonard crazy by being a model tenant.

15The Novelization Correlation

21 minFeb 1, 2018★ 7.1

Leonard's book raises questions, and Amy guest stars on the new Professor Proton show.

16The Neonatal Nomenclature

19 minMar 1, 2018★ 6.8

When Bernadette won't go into labor, the gang tries different tactics to get things started. Also, Howard confronts Bernadette after Amy accidentally reveals she's already chosen their son's name.

17The Athenaeum Allocation

20 minMar 8, 2018★ 6.7

Leonard jumps through hoops to help secure the perfect wedding venue for Sheldon and Amy. Also, Bernadette and Howard have a hard time deciding who should stay at home with the kids and who should go back to work.

18The Gates Excitation

20 minMar 29, 2018★ 6.9

Bill Gates visits Penny's work, and the gang schemes to meet him. Hilarity ensues. Meanwhile, Sheldon is convinced that he's a target of an April's Fools prank.

19The Tenant Disassociation

21 minApr 5, 2018★ 7.1

When Leonard learns Sheldon is the president of the tenants association, he decides to run against him. Also, Bernadette encourages Howard and Raj to find the owner of a drone after they find it in the backyard.

20The Reclusive Potential

21 minApr 12, 2018★ 7.0

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.

21The Comet Polarization

20 minApr 19, 2018★ 7.1

Sheldon’s comic book store experience changes when writer Neil Gaiman puts Stuart’s store on the map. Also, friendships are threatened when Raj takes credit for Penny's astronomical discovery.

22The Monetary Insufficiency

19 minApr 26, 2018★ 6.9

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.

23The Sibling Realignment

20 minMay 3, 2018★ 7.4

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, Howard and Raj with pinkeye.

24The Bow Tie Asymmetry

22 minMay 10, 2018★ 7.9

When Amy's parents and Sheldon's family arrive, everybody is focused to make sure all wedding arrangements go according to plan – everyone except the bride and groom.