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The Best Episodes of The Big Bang Theory Season 8

Every episode of The Big Bang Theory Season 8 ranked from best to worst. Discover the Best Episodes of The Big Bang Theory Season 8!

Binge this in 7h 55m•Peaking at 8.1/10

Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.

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Episode Rankings

  1. #1 Fan Favorite
    The Big Bang Theory Season 8 Episode 1 - The Locomotion Interruption
    7.2/10(4286 votes)

    #1 - 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.

    Director:Mark Cendrowski
    Writer:Unknown

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  2. The Big Bang Theory Season 8 Episode 2 - The Junior Professor Solution
    7.5/10(4007 votes)

    #2 - The Junior Professor Solution

    S8:E2

    Sheldon is forced to teach a class as a Junior Professor and Howard decides to enroll in it. Meanwhile, Amy plays both sides when tension arises between Penny and Bernadette.

    Director:Mark Cendrowski
    Writer:Unknown

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  3. The Big Bang Theory Season 8 Episode 3 - The First Pitch Insufficiency
    7.0/10(3943 votes)

    #3 - The First Pitch Insufficiency

    S8:E3

    Wolowitz feels nervous when he is asked to throw the first pitch at a Los Angeles Angels game. Penny and Leonard want to prove Sheldon wrong after he says he and Amy are the better couple.

    Director:Mark Cendrowski
    Writer:Unknown

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  4. The Big Bang Theory Season 8 Episode 4 - The Hook-Up Reverberation
    7.2/10(3727 votes)

    #4 - 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.

    Director:Mark Cendrowski
    Writer:Unknown

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  5. The Big Bang Theory Season 8 Episode 5 - The Focus Attenuation
    7.5/10(3838 votes)

    #5 - The Focus Attenuation

    S8:E5

    The girls head to Las Vegas for some weekend fun, while the guys try to invent something cool, but only come up with new ways to procrastinate.

    Director:Mark Cendrowski
    Writer:Unknown

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  6. The Big Bang Theory Season 8 Episode 6 - The Expedition Approximation
    7.2/10(3675 votes)

    #6 - The Expedition Approximation

    S8:E6

    Sheldon and Raj test whether they could survive a dark-matter research expedition in a salt mine by simulating the conditions in a steam tunnel deep underground. Meanwhile, Leonard and Penny seek advice from Howard and Bernadette after they fight about money.

    Director:Mark Cendrowski
    Writer:Unknown

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  7. The Big Bang Theory Season 8 Episode 7 - The Misinterpretation Agitation
    7.7/10(4036 votes)

    #7 - The Misinterpretation Agitation

    S8:E7

    The guys try to help Penny out of an awkward work dilemma, when a smitten doctor shows up at her door after her flirtatious sales techniques work a little too well. Meanwhile, Amy and Bernadette argue over whether or not female scientists should play up their sexuality.

    Director:Mark Cendrowski
    Writer:Unknown

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  8. The Big Bang Theory Season 8 Episode 8 - The Prom Equivalency
    8.0/10(4045 votes)

    #8 - The Prom Equivalency

    S8:E8

    The girls decide to re-enact their high school proms with the guys. While Sheldon feels under pressure to commit to his relationship with Amy, Howard worries about who Stuart will bring as his date.

    Director:Mark Cendrowski
    Writer:Unknown

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  9. The Big Bang Theory Season 8 Episode 9 - The Septum Deviation
    7.5/10(3616 votes)

    #9 - The Septum Deviation

    S8:E9

    When Leonard gets minor surgery on his nose, Sheldon is the one in need of sympathy. Meanwhile, Raj's parents' impending divorce causes Howard and Bernadette to work on their own marriage.

    Director:Anthony Rich
    Writer:Unknown

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  10. The Big Bang Theory Season 8 Episode 10 - The Champagne Reflection
    7.0/10(3682 votes)

    #10 - 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.

    Director:Mark Cendrowski
    Writer:Unknown

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  11. The Big Bang Theory Season 8 Episode 11 - The Clean Room Infiltration
    7.4/10(3582 votes)

    #11 - The Clean Room Infiltration

    S8:E11

    Leonard and Howard turn to Raj for help in dealing with a work emergency when they nearly come to blows after blaming each other for a potential disaster at the university. Amy throws an authentic Victorian Christmas party, while Sheldon seeks revenge on her for making him celebrate the holidays.

    Director:Mark Cendrowski
    Writer:Unknown

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  12. The Big Bang Theory Season 8 Episode 12 - The Space Probe Disintegration
    7.2/10(3478 votes)

    #12 - The Space Probe Disintegration

    S8:E12

    Howard tries to distract Raj, who is anxiously awaiting data from a space probe he helped launch. Meanwhile, Sheldon and Leonard go dress shopping with Penny and Amy.

    Director:Mark Cendrowski
    Writer:Unknown

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  13. The Big Bang Theory Season 8 Episode 13 - The Anxiety Optimization
    7.4/10(3472 votes)

    #13 - The Anxiety Optimization

    S8:E13

    When Sheldon becomes stuck in a rut with his work, the gang tries to help him by raising his stress levels. Howard teases Raj with a game called "Emily or Cinnamon?"

    Director:Mark Cendrowski
    Writer:Unknown

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  14. The Big Bang Theory Season 8 Episode 14 - The Troll Manifestation
    8.0/10(3772 votes)

    #14 - The Troll Manifestation

    S8:E14

    Leonard and Sheldon publish a paper which is widely accepted except for comments from an internet troll. Meanwhile, the girls reminisce about embarrassing incidents from their past.

    Director:Mark Cendrowski
    Writer:Unknown

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  15. The Big Bang Theory Season 8 Episode 15 - The Comic Book Store Regeneration
    8.1/10(3866 votes)

    #15 - The Comic Book Store Regeneration

    S8:E15

    Howard receives some shocking news as everyone prepares for the reopening of Stuart’s comic book store. Penny teaches Sheldon how to “let it go,” but can’t follow her own advice after she learns something infuriating about Amy. Also, Leonard and Raj think they spot Nathan Fillion at a restaurant.

    Director:Mark Cendrowski
    Writer:Unknown

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  16. The Big Bang Theory Season 8 Episode 16 - The Intimacy Acceleration
    7.8/10(3633 votes)

    #16 - The Intimacy Acceleration

    S8:E16

    As a joke, Sheldon and Penny try an experiment designed to make participants fall in love. Meanwhile, Leonard, Amy, Raj and Emily spend the evening trying to escape a room with a “zombie.” And, after returning from Mrs. Wolowitz’ funeral, Bernadette and Howard run into trouble at the airport.

    Director:Mark Cendrowski
    Writer:Unknown

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  17. The Big Bang Theory Season 8 Episode 17 - The Colonization Application
    7.5/10(3432 votes)

    #17 - The Colonization Application

    S8:E17

    A trip to the pet store ends in a fight after Amy learns Sheldon has applied for a one-way mission to colonize Mars. Meanwhile, Leonard surprises Penny with a very "adult" purchase, and Raj gets into trouble when he snoops around Emily's apartment.

    Director:Mark Cendrowski
    Writer:Unknown

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  18. The Big Bang Theory Season 8 Episode 18 - The Leftover Thermalization
    7.3/10(3417 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.

    Director:Mark Cendrowski
    Writer:Unknown

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  19. The Big Bang Theory Season 8 Episode 19 - The Skywalker Incursion
    7.5/10(3433 votes)

    #19 - The Skywalker Incursion

    S8:E19

    When Leonard and Sheldon are invited to speak at UC Berkeley, they take a detour to try to meet an idol. Also, when Bernadette and Howard battle over the fate of his Doctor Who TARDIS, Raj and Amy offer to settle the dispute with a game of ping pong.

    Director:Mark Cendrowski
    Writer:Unknown

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  20. The Big Bang Theory Season 8 Episode 20 - The Fortification Implementation
    7.5/10(3409 votes)

    #20 - The Fortification Implementation

    S8:E20

    When Sheldon and Amy build a blanket fort, they come to major crossroads in their relationship. Also, Howard meets the half-brother he never knew he had. Meanwhile, Penny is invited to appear on Wil Wheaton’s podcast, but things turn awkward when Leonard joins them.

    Director:Mark Cendrowski
    Writer:Unknown

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  21. The Big Bang Theory Season 8 Episode 21 - The Communication Deterioration
    7.0/10(3327 votes)

    #21 - 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.

    Director:Mark Cendrowski
    Writer:Unknown

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  22. The Big Bang Theory Season 8 Episode 22 - The Graduation Transmission
    7.3/10(3384 votes)

    #22 - 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.

    Director:Anthony Rich
    Writer:Unknown

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  23. The Big Bang Theory Season 8 Episode 23 - The Maternal Combustion
    7.5/10(3472 votes)

    #23 - The Maternal Combustion

    S8:E23

    Personalities collide when Sheldon and Leonard’s mothers finally meet. Meanwhile, Howard finally decides to “man up” and do his fair share of the housework – but not without a little help from his friends.

    Director:Anthony Rich
    Writer:Unknown

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  24. The Big Bang Theory Season 8 Episode 24 - The Commitment Determination
    7.9/10(3891 votes)

    #24 - The Commitment Determination

    S8:E24

    As Sheldon presses Leonard and Penny to set a wedding date, he encounters major changes in his own relationship with Amy. Meanwhile, Raj contemplates breaking up with Emily, and Howard and Bernadette struggle with asking Stuart to move out of their house.

    Director:Mark Cendrowski
    Writer:Unknown

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Season 8 Ratings Summary

"The Locomotion Interruption" is the best rated episode of "The Big Bang Theory" season 8. It scored 7.2/10 based on 4286 votes. Directed by Mark Cendrowski and written by Unknown, it aired on 9/22/2014. This episode is rated 0.3 points higher than the second-best, "The Junior Professor Solution".