The Big Bang Theory

The Worst Episodes of The Big Bang Theory

Genre:Comedy
Network:CBS

Every episode of The Big Bang Theory ranked from worst to best. Explore the Worst Episodes of The Big Bang Theory!

Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.
Episodes
279
Avg. Rating
7.7
S1
S2
S3
S4
E1
E2
E3
8.1
8.2
8.3
8.7
8.2
8.0
7.7
8.3
7.6
8.7
8.1
7.9

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  1. 6.8/10(4.1k votes)

    #1 - The Matrimonial Momentum

    S9:E1

    After driving to Vegas to get married, Penny struggles with Leonard’s confession that he kissed another girl. Also, Sheldon doesn't know how to act after Amy pushes pause on their relationship.

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    Writer:N/A
  2. 6.8/10(2.7k votes)

    #2 - The Cognition Regeneration

    S10:E22

    Leonard isn’t thrilled when Penny considers taking a new job offered by her ex-boyfriend, Zack.

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    Writer:N/A
  3. 6.8/10(38 votes)

    #3 - The Celebration Reverberation

    S11:E11

    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.

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    Writer:N/A
  4. 6.8/10(36 votes)

    #4 - The Separation Triangulation

    S11:E14

    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.

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    Writer:N/A
  5. 6.8/10(39 votes)

    #5 - The Athenaeum Allocation

    S11:E17

    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.

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    Writer:N/A
  6. 6.8/10(2.7k votes)

    #6 - The Planetarium Collision

    S12:E5

    When Amy doesn’t have time to work on super-asymmetry, Sheldon goes to great lengths to ensure she’s available to work with him even it if means accidentally sabotaging her career in the process. Raj doesn’t want Howard to join him in hosting a show at the planetarium.

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    Writer:N/A
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  8. 6.9/10(45 votes)

    #7 - The Communication Deterioration

    S8:E21

    When Raj is asked to create a message in case a NASA mission discovers alien life, the guys fight over what he should do. Also, Penny is torn between auditioning for a movie or keeping her successful pharmaceutical sales job.

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    Writer:N/A
  9. 6.9/10(2.9k votes)

    #8 - The Romance Recalibration

    S10:E13

    When Penny feels that Leonard is taking her for granted, she decides to go on a spa weekend with Amy. Also, Wolowitz and Koothrappali try to fix a squeaky floorboard in the baby’s room.

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    Writer:N/A
  10. 6.9/10(41 votes)

    #9 - The Retraction Reaction

    S11:E2

    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.

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    Writer:N/A
  11. 6.9/10(40 votes)

    #10 - The Relaxation Integration

    S11:E3

    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.

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    Writer:N/A
  12. 6.9/10(36 votes)

    #11 - The Explosion Implosion

    S11:E4

    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.

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    Writer:N/A
  13. 6.9/10(38 votes)

    #12 - The Confidence Erosion

    S11:E10

    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.

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    Writer:N/A
  14. 6.9/10(39 votes)

    #13 - The Neonatal Nomenclature

    S11:E16

    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.

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    Director:Gay Linvill
    Writer:N/A
  15. 6.9/10(39 votes)

    #14 - The Monetary Insufficiency

    S11:E22

    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.

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    Director:Nikki Lorre
    Writer:N/A
  16. 7.0/10(46 votes)

    #15 - The Locomotion Interruption

    S8:E1

    Leonard and Amy make an unexpected trip to Arizona to fetch Sheldon; Penny interviews for a job at Bernadette's company; Stuart's relationship with Mrs. Wolowitz disturbs Howard.

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    Writer:N/A
  17. 7.0/10(41 votes)

    #16 - The Hook-Up Reverberation

    S8:E4

    Raj's honesty comes back to haunt him when his new girlfriend is unfriendly to Penny. The guys think about becoming part owners in Stuart's store.

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    Writer:N/A
  18. 7.0/10(44 votes)

    #17 - The Champagne Reflection

    S8:E10

    While Sheldon says a tearful goodbye to the final installment of "Fun with Flags", Leonard, Howard and Raj search for something significant in a dead professor's research. And Bernadette finds out what her colleagues really think of her.

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    Writer:N/A
  19. 7.0/10(45 votes)

    #18 - The Leftover Thermalization

    S8:E18

    Friction ensues when a magazine fails to mention Leonard in an article about the paper he co-wrote with Sheldon. Also, a blackout at Mrs. Wolowitz’s home leads to a final family dinner in her honor.

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    Writer:N/A
  20. 7.0/10(44 votes)

    #19 - The Graduation Transmission

    S8:E22

    Howard questions his engineering abilities when he and Sheldon can’t get a toy drone to fly. Meanwhile, a cancelled flight nearly prevents Leonard from giving the commencement address at his former high school, and Raj pits his parents against each other when his father cuts him off financially.

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    Writer:N/A
  21. 7.0/10(36 votes)

    #20 - The Collaboration Contamination

    S11:E5

    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.

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    Director:Nikki Lorre
    Writer:N/A
  22. 7.0/10(38 votes)

    #21 - The Tesla Recoil

    S11:E8

    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.

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    Writer:N/A
  23. 7.0/10(36 votes)

    #22 - The Matrimonial Metric

    S11:E12

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

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    Writer:N/A
  24. 7.0/10(36 votes)

    #23 - The Solo Oscillation

    S11:E13

    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.

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    Writer:N/A
  25. 7.0/10(42 votes)

    #24 - The Gates Excitation

    S11:E18

    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.

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    Writer:N/A
  26. 7.0/10(38 votes)

    #25 - The Tenant Disassociation

    S11:E19

    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.

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    Writer:N/A

Worst Episodes Summary

"The Matrimonial Momentum" is the worst rated episode of "The Big Bang Theory". It scored 6.8/10 based on 4103 votes. Directed by Mark Cendrowski and written by N/A, it aired on 9/21/2015. This episode scored 0.0 points lower than the second lowest rated, "The Cognition Regeneration".