The BEST episodes of The Big Bang Theory season 11

Every episode of The Big Bang Theory season 11, ranked from best to worst by thousands of votes from fans of the show. The best episodes of The Big Bang Theory season 11!

A woman who moves into an apartment across the hall from two brilliant but socially awkward physicists shows them how little they know about life outside of the laboratory.

Last Updated: 12/10/2024Network: CBSStatus: Ended
The Bow Tie Asymmetry
star
8.20
4797 votes

#1 - The Bow Tie Asymmetry

Season 11 - Episode 24 - Aired 5/10/2018

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.

Directors: Mark Cendrowski
Watch Now:AmazonApple TV
The Bitcoin Entanglement
star
7.68
6129 votes

#2 - The Bitcoin Entanglement

Season 11 - Episode 9 - Aired 11/30/2017

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.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Proposal Proposal
star
7.66
7900 votes

#3 - The Proposal Proposal

Season 11 - Episode 1 - Aired 9/25/2017

Amy gives Sheldon an answer to his proposal while Howard and Bernadette struggle with some unexpected news.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Sibling Realignment
star
7.64
4678 votes

#4 - The Sibling Realignment

Season 11 - Episode 23 - Aired 5/3/2018

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 infects Amy, Bernadette, Wolowitz and Koothrappali with pinkeye.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Comet Polarization
star
7.63
4779 votes

#5 - The Comet Polarization

Season 11 - Episode 21 - Aired 4/19/2018

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.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Confidence Erosion
star
7.62
5890 votes

#6 - The Confidence Erosion

Season 11 - Episode 10 - Aired 12/7/2017

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

Directors: Mark Cendrowski
Watch Now:Apple TV
The Geology Methodology
star
7.61
6229 votes

#7 - The Geology Methodology

Season 11 - Episode 7 - Aired 11/9/2017

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.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Novelization Correlation
star
7.60
5429 votes

#8 - The Novelization Correlation

Season 11 - Episode 15 - Aired 2/1/2018

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.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Collaboration Contamination
star
7.58
6770 votes

#9 - The Collaboration Contamination

Season 11 - Episode 5 - Aired 10/23/2017

Sheldon and Koothrappali confide in Bernadette when they can't handle Amy and Wolowitz working together. Also, Penny and Leonard learn new tactics for how to deal Sheldon from an unlikely source.

Directors: Nikki Lorre
Watch Now:Apple TV
The Matrimonial Metric
star
7.58
5644 votes

#10 - The Matrimonial Metric

Season 11 - Episode 12 - Aired 1/4/2018

To discover who would be most qualified to be best man and maid of honor at their wedding, Sheldon and Amy subject their friends to a series of secret experiments. Also, Penny reveals her true feelings about Amy.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Tenant Disassociation
star
7.57
4894 votes

#11 - The Tenant Disassociation

Season 11 - Episode 19 - Aired 4/5/2018

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.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Monetary Insufficiency
star
7.57
4772 votes

#12 - The Monetary Insufficiency

Season 11 - Episode 22 - Aired 4/26/2018

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.

Directors: Nikki Lorre
Watch Now:Apple TV
The Proton Regeneration
star
7.56
6348 votes

#13 - The Proton Regeneration

Season 11 - Episode 6 - Aired 11/2/2017

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 Wolowitz both wind up on bed rest.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Tesla Recoil
star
7.54
6090 votes

#14 - The Tesla Recoil

Season 11 - Episode 8 - Aired 11/16/2017

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.

Directors: Anthony Rich
Watch Now:Apple TV
The Reclusive Potential
star
7.53
4787 votes

#15 - The Reclusive Potential

Season 11 - Episode 20 - Aired 4/12/2018

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.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Retraction Reaction
star
7.53
7541 votes

#16 - The Retraction Reaction

Season 11 - Episode 2 - Aired 10/2/2017

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.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Celebration Reverberation
star
7.52
5764 votes

#17 - The Celebration Reverberation

Season 11 - Episode 11 - Aired 12/14/2017

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.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Separation Triangulation
star
7.52
5543 votes

#18 - The Separation Triangulation

Season 11 - Episode 14 - Aired 1/18/2018

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, when Sheldon rents his old room back for a quiet place to work, he drives Leonard crazy by being a model tenant.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Relaxation Integration
star
7.51
7126 votes

#19 - The Relaxation Integration

Season 11 - Episode 3 - Aired 10/9/2017

As Sheldon stresses about picking a wedding date, Amy tries to convince him he has a more laid-back side. Also, Koothrappali and Stuart compete to win the heart of Bernadette's new coworker, Ruchi.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Explosion Implosion
star
7.51
6967 votes

#20 - The Explosion Implosion

Season 11 - Episode 4 - Aired 10/16/2017

Wolowitz and Sheldon bond when they drive to the desert to shoot off a model rocket. Also, when Leonard's mom, Beverly, finds a new best friend in Penny, it rubs Leonard the wrong way.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Athenaeum Allocation
star
7.50
5177 votes

#21 - The Athenaeum Allocation

Season 11 - Episode 17 - Aired 3/8/2018

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.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Gates Excitation
star
7.50
4961 votes

#22 - The Gates Excitation

Season 11 - Episode 18 - Aired 3/29/2018

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.

Directors: Mark Cendrowski
Watch Now:Apple TV
The Neonatal Nomenclature
star
7.50
5289 votes

#23 - The Neonatal Nomenclature

Season 11 - Episode 16 - Aired 3/1/2018

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.

Directors: Gay Linvill
Watch Now:Apple TV
The Solo Oscillation
star
7.48
5593 votes

#24 - The Solo Oscillation

Season 11 - Episode 13 - Aired 1/11/2018

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.

Directors: Mark Cendrowski
Watch Now:Apple TV