The Big Bang Theory

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Watch The Big Bang Theory Season 6 full episodes online, free and paid options via our partners and affiliates.

Leonard's New Job
Watch The Big Bang Theory Season 6 Episode 24
"The Bon Voyage Reaction"
Original Air Date:

In the season 6 finale of The Big Bang Theory, Penny and Sheldon are shocked when Leonard considers taking a great job opportunity overseas.

Do Girls Play?
Watch The Big Bang Theory Season 6 Episode 23
"The Love Spell Potential"
Original Air Date:

The women end up playing Dungeon and Dragons with the boys when their vacation to Vegas is called off on The Big Bang Theory.

Professor Proton
Watch The Big Bang Theory Season 6 Episode 22
"The Proton Resurgence"
Original Air Date:

Bob Newhart guest stars as Professor Proton, the host of Sheldon's favorite childhood TV show on The Big Bang Theory.

Trouble With Closure
Watch The Big Bang Theory Season 6 Episode 21
"The Closure Alternative"
Original Air Date:

When Sheldon's favorite TV show ends before its proper conclusion, Amy tries to help him deal with the loss on The Big Bang Theory.

Roadblocks to Tenure
Watch The Big Bang Theory Season 6 Episode 20
"The Tenure Turbulence"
Original Air Date:

The guys compete for tenure and shamelessly schmooze committee members including an HR person who has already had a run in with Sheldon on The Big Bang Theory.

The Cocktail Party
Watch The Big Bang Theory Season 6 Episode 19
"The Closet Reconfiguration"
Original Air Date:

On The Big Bang Theory, Howard uncovers a letter from his father who had left the family years before but he's unsure he wants to read it.

The Junior High Presentation
Watch The Big Bang Theory Season 6 Episode 18
"The Contractual Obligation Implementation"
Original Air Date:

Sheldon, Howard, and Leonard give a presentation on careers in science to a group of junior high girls on The Big Bang Theory.

Koothrapali Refuses to Leave
Watch The Big Bang Theory Season 6 Episode 17
"The Monster Isolation"
Original Air Date:

Sheldon gets to witness Penny's acting talents up close and Koothrapali's date walks out on him on The Big Bang Theory.

Penny & Leonard's Valentine's
Watch The Big Bang Theory Season 6 Episode 16
"The Tangible Affection of Proof"
Original Air Date:

Everything goes awry when Leonard arranges a special Valentine's Day celebration for Penny and her ex shows up and Sheldon has his research assistant find a present for Amy on The Big Bang Theory.

Leonard & Sheldon's Fight
Watch The Big Bang Theory Season 6 Episode 15
"The Spoiler Alert Segmentation"
Original Air Date:

Leonard moves in with Penny after he and Sheldon have a fight, meanwhile with Howard away on a trip Raj keeps on eye on Mrs. Wolowitz.

Sheldon Reacts Badly
Watch The Big Bang Theory Season 6 Episode 14
"The Cooper/Kripke Inversion"
Original Air Date:

Sheldon reacts badly when he is forced to work with his arch nemesis Barry Kripke and Raj and Howard buy action figures of themselves on The Big Bang Theory.

Star Trek Road Trip
Watch The Big Bang Theory Season 6 Episode 13
"The Bakersfield Expedition"
Original Air Date:

On The Big Bang Theory the boys head off to a comic book convention dressed as characters from Star Trek: The Next Generation.

Sheldon's Jenga
Watch The Big Bang Theory Season 6 Episode 12
"The Egg Salad Equivalency"
Original Air Date:

Will Sheldon take Leonard, Raj, and Howard down with him when his is accused of sexual harassment on The Big Bang Theory.

A Girl for Koothrappali
Watch The Big Bang Theory Season 6 Episode 11
"The Santa Simulation"
Original Air Date:

Sheldon remembers past Christmases during a game of Dungeons and Dragons while the ladies try to find a girl for Koothrappali on The Big Bang Theory.

Sheldon the Caretaker
Watch The Big Bang Theory Season 6 Episode 10
"The Fish Guts Displacement"
Original Air Date:

On The Big Bang Theory, Wolowitz goes on a fishing trip with his father-in-law while Sheldon takes care of a sick Amy.

Sheldon's Parking Space
Watch The Big Bang Theory Season 6 Episode 9
"The Parking Spot Escalation"
Original Air Date:

The whole gang gets involved when the university reassigns Sheldon's parking spot to Wolowitz on his return from space on The Big Bang Theory.

Following Sheldon
Watch The Big Bang Theory Season 6 Episode 8
"The 43rd Peculiarity"
Original Air Date:

When Sheldon begins disappearing every day at 2:45pm, Howard and Raj make it their mission to find out where he's going on The Big Bang Theory.

Sheldon In The Middle
Watch The Big Bang Theory Season 6 Episode 7
"The Habitation Configuration"
Original Air Date:

Sheldon gets caught in the middle of an argument between Amy and Will Wheaton (playing himself) while the new Mrs Wolowitz wants her husband out of his ex-wife's house on The Big Bang Theory.

An Argument with His Idol
Watch The Big Bang Theory Season 6 Episode 6
"The Extract Obliteration"
Original Air Date:

On The Big Bang Theory, Sheldon and his idol Stephen Hawking get into an argument over the game Words with Friends which could put their relationship in jeopardy.

A Halloween Smurf
Watch The Big Bang Theory Season 6 Episode 5
"The Holographic Excitation"
Original Air Date:

On The Big Bang Theory, the gang spends Halloween at Stuart's comic book shop while Leonard attempts a new approach to seduce Penny. Astronaut Buzz Aldrin guest stars.

A Messy Battle
Watch The Big Bang Theory Season 6 Episode 4
"The Re-Entry Minimization"
Original Air Date:

Wolowitz doesn't get the warm welcome he expected upon his return and game night turns ugly on The Big Bang Theory.

Sheldon Hires an Assitant
Watch The Big Bang Theory Season 6 Episode 3
"The Higgs Boson Observation"
Original Air Date:

Amy isn't happy when Sheldon hires a new assitant and Wolowitz begins to feel the pressures of being in space on The Big Bang Theory.

Sheldon Tries To Invervene
Watch The Big Bang Theory Season 6 Episode 2
"The Decoupling Fluctuation"
Original Air Date:

On The Big Bang Theory, Howard gets picked on in space while Sheldon unearths a secret of Penny and Leonard's.

Big Bang Theory Boys
Watch The Big Bang Theory Season 6 Episode 1
"The Date Night Variable"
Original Air Date:

His friends all go on dates to kick off The Big Bang Theory Season 6. As a result, Raj must face his loneliness.

The Big Bang Theory Season 6 Quotes

Raj: Okay, here's another one: if a zombie bites a vampire, and the vampire bites a human, does the human become a vampire or a zombie? Or, a zompire?

What do Sheldon Cooper and the black hole have in common? They both suck.

Professor Hawking
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