7.2/104,060 votes#1 - The Locomotion Interruption
Season 8 Episode 1 - Aired 9/22/2014
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: N/A
7.5/103,786 votes#2 - The Junior Professor Solution
Season 8 Episode 2 - Aired 9/22/2014
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: N/A
7.0/103,716 votes#3 - The First Pitch Insufficiency
Season 8 Episode 3 - Aired 9/29/2014
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: N/A
7.2/103,506 votes#4 - The Hook-Up Reverberation
Season 8 Episode 4 - Aired 10/6/2014
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: N/A
7.5/103,614 votes#5 - The Focus Attenuation
Season 8 Episode 5 - Aired 10/13/2014
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: N/A
7.2/103,458 votes#6 - The Expedition Approximation
Season 8 Episode 6 - Aired 10/20/2014
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: N/A
7.7/103,803 votes#7 - The Misinterpretation Agitation
Season 8 Episode 7 - Aired 10/30/2014
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: N/A
8.0/103,804 votes#8 - The Prom Equivalency
Season 8 Episode 8 - Aired 11/6/2014
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: N/A
7.5/103,398 votes#9 - The Septum Deviation
Season 8 Episode 9 - Aired 11/13/2014
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 Joseph Rich
Writer: N/A
7.0/103,464 votes#10 - The Champagne Reflection
Season 8 Episode 10 - Aired 11/20/2014
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: N/A
7.4/103,361 votes#11 - The Clean Room Infiltration
Season 8 Episode 11 - Aired 12/11/2014
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: N/A
7.2/103,253 votes#12 - The Space Probe Disintegration
Season 8 Episode 12 - Aired 1/8/2015
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: N/A
7.4/103,252 votes#13 - The Anxiety Optimization
Season 8 Episode 13 - Aired 1/29/2015
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: N/A
8.0/103,539 votes#14 - The Troll Manifestation
Season 8 Episode 14 - Aired 2/5/2015
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: N/A
8.0/103,622 votes#15 - The Comic Book Store Regeneration
Season 8 Episode 15 - Aired 2/19/2015
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: N/A
7.8/103,398 votes#16 - The Intimacy Acceleration
Season 8 Episode 16 - Aired 2/26/2015
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: N/A
7.5/103,210 votes#17 - The Colonization Application
Season 8 Episode 17 - Aired 3/5/2015
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: N/A
7.3/103,189 votes#18 - The Leftover Thermalization
Season 8 Episode 18 - Aired 3/12/2015
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: N/A
7.5/103,196 votes#19 - The Skywalker Incursion
Season 8 Episode 19 - Aired 4/2/2015
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: N/A
7.5/103,180 votes#20 - The Fortification Implementation
Season 8 Episode 20 - Aired 4/9/2015
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: N/A
7.0/103,102 votes#21 - The Communication Deterioration
Season 8 Episode 21 - Aired 4/16/2015
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: N/A
7.3/103,162 votes#22 - The Graduation Transmission
Season 8 Episode 22 - Aired 4/23/2015
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 Joseph Rich
Writer: N/A
7.5/103,244 votes#23 - The Maternal Combustion
Season 8 Episode 23 - Aired 4/30/2015
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 Joseph Rich
Writer: N/A
7.9/103,664 votes#24 - The Commitment Determination
Season 8 Episode 24 - Aired 5/7/2015
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: N/A
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!
Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.
Genre:Comedy
Network:CBS
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 4060 votes. Directed by Mark Cendrowski and written by N/A, it aired on 9/22/2014. This episode is rated 0.3 points higher than the second-best, "The Junior Professor Solution".