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The Big Bang Theory Season 8 Episodes

24 Episodes 2014 - 2015

Relationships dominate the eighth season of this sitcom, and the gang continues to find difficulties around every corner. Penny (Kaley Cuoco) and Leonard (Johnny Galecki) both blossom and flounder in the wake of their engagement, while Sheldon (Jim Parsons) and Amy (Mayim Bialik) seem to make progress, though Amy is still unhappy about their slow pace. Raj (Kunal Nayyar), too, has a steady girlfriend in Emily (Laura Spencer), but she has a few quirks that give him the creeps. Howard (Simon Helberg) and Bernadette (Melissa Rauch) face an awkward situation when Stuart (Kevin Sussman) moves in with Howard's mother (voice of Carol Ann Susi), and Howard becomes especially frustrated after they develop a mother/son bond. But, the gang bands together to help Howard cope with a big personal crisis. Notable cameos this season include Billy Bob Thornton, Wil Wheaton, Kevin Smith and Stephen Hawking.

Episode 1

The Locomotion Interruption

Mon, Sep 22, 2014 30 mins

In the Season 8 premiere, Amy and Leonard take a surprise road trip to Arizona to retrieve Sheldon, while Penny goes on a job interview at Bernadette's company, and Howard has problems wrapping his head around Stuart's relationship with Mrs. Wolowitz.

Where to Watch
The Big Bang Theory, Season 8 Episode 1 image

Episode 2

The Junior Professor Solution

Mon, Sep 22, 2014 30 mins

Sheldon is ordered to teach a class, and the gang is surprised when Howard signs up to take it; and tensions between Penny and Bernadette afford Amy an opportunity to play one against the other.

Where to Watch
The Big Bang Theory, Season 8 Episode 2 image

Episode 3

The First Pitch Insufficiency

Mon, Sep 29, 2014 30 mins

A nervous Wolowitz is thrown for a loop when NASA asks him to toss out the first pitch at a Los Angeles Angels baseball game. Meanwhile, Sheldon brags that he and Amy are a better couple than Leonard and Penny, so they set out to prove he's way off base.

Where to Watch
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Episode 4

The Hook-Up Reverberation

Mon, Oct 6, 2014 30 mins

Raj's girlfriend, Emily, gives Penny the cold shoulder after he reveals some info about their past history; and the guys contemplate buying into Stuart's comic-book emporium.

Where to Watch
The Big Bang Theory, Season 8 Episode 4 image

Episode 5

The Focus Attenuation

Mon, Oct 13, 2014 30 mins

Amy and Bernadette accuse former party girl Penny of becoming a party pooper when she lets an email from work impact their girls' weekend in Las Vegas. Meanwhile, the guys brainstorm about inventing something cool, but their heads just don't appear to be totally into it.

Where to Watch
The Big Bang Theory, Season 8 Episode 5 image

Episode 6

The Expedition Approximation

Mon, Oct 20, 2014 30 mins

Sheldon and Raj undertake an underground research expedition that turns into a test of how long before they get under each other's skin. Meanwhile, Leonard and Penny argue about money, and go to Wolowitz and Bernadette for advice.

Where to Watch
The Big Bang Theory, Season 8 Episode 6 image

Episode 7

The Misinterpretation Agitation

Thu, Oct 30, 2014 30 mins

Penny's flirtatious sales pitch leaves a doctor-client smitten and the guys must pitch in to help her deal with him, while, Bernadette and Amy debate whether female scientists ought to play the sexuality card.

Where to Watch
The Big Bang Theory, Season 8 Episode 7 image

Episode 8

The Prom Equivalency

Thu, Nov 6, 2014 30 mins

Amy and Bernadette organise a prom to be held atop the guys' apartment complex, but Sheldon is worried about all the prom pomp, circumstance and romancing.

Where to Watch
The Big Bang Theory, Season 8 Episode 8 image

Episode 9

The Septum Deviation

Thu, Nov 13, 2014 30 mins

Leonard needs surgery for a deviated septum, and Sheldon gets his nose out of joint because he feels an operation is too dangerous and that his roommate may not make it out alive. Meanwhile, a distraught Raj learns his parents have divorced on the eve of their 40th anniversary.

Where to Watch
The Big Bang Theory, Season 8 Episode 9 image

Episode 10

The Champagne Reflection

Thu, Nov 20, 2014 30 mins

It's a banner day for Sheldon as he bids a sad farewell to his "Fun With Flags" podcast. Meanwhile, Leonard, Howard and Raj probe a late professor's research in search of some hidden significance; and Bernadette is surprised when Penny reveals how her co-workers really feel about her.

Where to Watch
The Big Bang Theory, Season 8 Episode 10 image

Episode 11

The Clean Room Infiltration

Thu, Dec 11, 2014 30 mins

On Christmas Eve, Amy plans a traditional Victorian dinner, while Raj, Leonard and Howard scramble to remove a pigeon that flew into the clean room at the university. To prove a point to Amy, a Scrooge-like Sheldon buys her the worst possible gift.

Where to Watch
The Big Bang Theory, Season 8 Episode 11 image

Episode 12

The Space Probe Disintegration

Thu, Jan 8, 2015 30 mins

While Raj eagerly awaits data from a space probe in which he was involved, Howard keeps distracting him. Later, dress shopping with Penny and Amy doesn't exactly prove to be a good fit for Leonard and Sheldon.

Where to Watch
The Big Bang Theory, Season 8 Episode 12 image

Episode 13

The Anxiety Optimization

Thu, Jan 29, 2015 30 mins

Sheldon becomes concerned that his cushy lifestyle is impacting his professional progress so he asks the gang to make life more difficult for him. Meanwhile, Howard invents an unflattering game about Raj.

Where to Watch
The Big Bang Theory, Season 8 Episode 13 image

Episode 14

The Troll Manifestation

Thu, Feb 5, 2015 30 mins

An online troll mocks Leonard and Sheldon's published physics paper, so the guys rally to defend the two and expose the bully, while a girls night out leads to Penny, Amy and Bernadette dishing about embarrassing past events.

Where to Watch
The Big Bang Theory, Season 8 Episode 14 image

Episode 15

The Comic Book Store Regeneration

Thu, Feb 19, 2015 30 mins

Amid the excitement of Stuart re-opening his comic-book store, Howard gets some unsettling news; and after teaching Sheldon how to "let it go," Penny doesn't practice what she preaches when she learns something maddening about Amy. Meanwhile, Raj and Leonard run into a restaurant customer who looks a lot like actor Nathan Fillion.

Where to Watch
The Big Bang Theory, Season 8 Episode 15 image

Episode 16

The Intimacy Acceleration

Thu, Feb 26, 2015 30 mins

An experiment designed to make participants fall in love piques Penny and Leonard's interest, so they decide to put it to the test. Meanwhile, Leonard, Amy, Raj and Emily have an encounter with a "zombie" and Howard and Bernadette run into trouble at the airport.

Where to Watch
The Big Bang Theory, Season 8 Episode 16 image

Episode 17

The Colonization Application

Thu, Mar 5, 2015 30 mins

There's trouble in paradise when Amy discovers Sheldon signed up for a one-way mission to colonise Mars, and the two get into a dogfight at a pet store. Meanwhile, Leonard makes a very "adult" purchase for Penny; and Emily catches Raj snooping in her apartment.

Where to Watch
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Episode 18

The Leftover Thermalization

Thu, Mar 12, 2015 30 mins

An electrical short thaws the last meal that was cooked by Mrs. Wolowitz, and the gang ponders what to do with it, while Sheldon and Leonard's work is featured in a magazine, but only one receives credit.

Where to Watch
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Episode 19

The Skywalker Incursion

Thu, Apr 2, 2015 30 mins

A speaking engagement at UC Berkeley puts Leonard and Sheldon in a galaxy not too far, far away from their idol George Lucas' Skywalker Ranch, and they consider dropping by. Meanwhile, Howard and Bernadette argue over what to do with his Doctor Who TARDIS, so Raj and Amy try to settle things with a game of table tennis.

Where to Watch
The Big Bang Theory, Season 8 Episode 19 image

Episode 20

The Fortification Implementation

Thu, Apr 9, 2015 30 mins

Howard discovers he has a half-brother; Sheldon and Amy build a blanket fort in the apartment and intend to have a platonic sleepover; and Leonard gets a surprise when he learns Penny's been invited to audition for a Kevin Smith movie.

Where to Watch
The Big Bang Theory, Season 8 Episode 20 image

Episode 21

The Communication Deterioration

Thu, Apr 16, 2015 30 mins

In the event of alien contact, NASA asks Raj to craft a message for the extraterrestrials, and the guys battle over how it should be handled. Meanwhile, Penny must decide between auditioning for a film role or keeping her job in pharmaceutical sales.

Where to Watch
The Big Bang Theory, Season 8 Episode 21 image

Episode 22

The Graduation Transmission

Thu, Apr 23, 2015 30 mins

Leonard's high-school alma mater asks him to make a graduation speech, but plans may be scuttled when his flight is canceled. Meanwhile, Raj's allowance is canceled by his father.

Where to Watch
The Big Bang Theory, Season 8 Episode 22 image

Episode 23

The Maternal Combustion

Thu, Apr 30, 2015 30 mins

Leonard and Sheldon's mothers come to town to celebrate their sons getting an award, but the opinionated women engage in an altercation over religion, while Bernadette wants husband Howard and housemate Stuart to do a bit more work around their new home.

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The Big Bang Theory, Season 8 Episode 23 image

Episode 24

The Commitment Determination

Thu, May 7, 2015 30 mins

In the Season 8 finale, Leonard and Penny are pressured to set a wedding date by Sheldon, whose relationship with Amy has taken an interesting turn.

Where to Watch
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