The Big Bang Theory Season 8 Episodes

Find out where to watch Season 8 of The Big Bang Theory tonight
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Season 8 Episode Guide

Episode 1 - The Locomotion Interruption

Leonard and Amy take an unexpected road trip to Arizona to pick up Sheldon. Meanwhile, Penny interviews for a job at Bernadette's company.
Episode 2 - The Junior Professor Solution

When Sheldon is forced to teach a class, Howard surprises everyone by taking it. Meanwhile, Amy sees an opportunity to play both sides.
Episode 3 - The First Pitch Insufficiency

Leonard and Penny try to prove Sheldon wrong after he says that he and Amy are a superior couple.
Episode 4 - The Hook-Up Reverberation

Penny tries to figure out why Emily doesn’t like her; the guys consider becoming part-owners in Stuart's comic book store.
Episode 5 - The Focus Attenuation

With the girls away in Vegas for the weekend, the guys try to invent “the next big thing,” but only come up with new ways to procrastinate.
Episode 6 - The Expedition Approximation

Sheldon and Raj see if they can survive intense heat, and each other, when they venture deep underground in the name of science.
Episode 7 - The Misinterpretation Agitation

The guys try to help Penny out of an awkward work dilemma, after her flirtatious sales techniques work a little too well on a doctor.
Episode 8 - The Prom Equivalency

When the gang recreates prom night on the roof of their building, Sheldon feels pressure to participate in all the romantic traditions.
Episode 9 - The Septum Deviation

Sheldon is in need of sympathy when Leonard gets minor surgery; Raj’s parents’ divorce leads Howard & Bernadette to work on their marriage.
Episode 10 - The Champagne Reflection

As Sheldon records the final installment of “Fun with Flags,” Bernadette is shocked to learn of her co-workers’ true feelings from Penny.
Episode 11 - The Clean Room Infiltration

Leonard and Wolowitz nearly come to blows and turn to Raj for help in dealing with a work emergency.
Episode 12 - The Space Probe Disintegration

When the guys finally agree to do something the girls like, it leads to a confrontation between Leonard and Sheldon.
Episode 13 - The Anxiety Optimization

Sheldon worries his comfortable lifestyle is preventing him from achieving scientific progress so he asks his friends to make him miserable.
Episode 14 - The Troll Manifestation

After Leonard and Sheldon co-publish a physics paper, they must defend themselves against criticism from an online bully.
Episode 15 - The Comic Book Store Regeneration

Wolowitz receives some shocking news as everyone prepares for the reopening of Stuart’s comic book store.
Episode 16 - The Intimacy Acceleration

When the gang hears about an experiment designed to make participants fall in love, Sheldon and Penny put it to the test.
Episode 17 - The Colonization Application

Amy learns that Sheldon has applied for a one-way mission to colonize Mars. Leonard surprises Penny with a very ‘adult’ purchase.
Episode 18 - The Leftover Thermalization

Friction ensues when a magazine fails to mention Leonard in an article about the paper he co-wrote with Sheldon.
Episode 19 - The Skywalker Incursion

When Leonard and Sheldon are invited to speak at UC Berkeley, they try to sneak on to George Lucas’s Skywalker Ranch to meet their idol.
Episode 20 - The Fortification Implementation

Wolowitz is shocked when a man claiming to be his half-brother shows up at his door. Sheldon & Amy reach a crossroads in their relationship.
Episode 21 - The Communication Deterioration

When Raj is asked to create a message in case a NASA mission discovers alien life, the guys fight over what he should do.
Episode 22 - The Graduation Transmission

Howard questions his engineering abilities, while Raj pits his parents against each other when his father cuts him off financially.
Episode 23 - The Maternal Combustion

Both Sheldon and Leonard's mothers visit to see their sons get an award; Bernadette wants help around their new home from Howard and Stuart.
Episode 24 - The Commitment Determination

In the season finale, Sheldon presses Leonard and Penny to choose a date for their wedding, while dealing with his own changes with Amy.


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