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Watch S3, EP15: The Large Hadron Collision with Fubo for $0 Today

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Leonard must choose who to bring with him when he goes to see the Large Hadron Collider on Valentine's Day.

Leonard must choose who to bring with him when he goes to see the Large Hadron Collider on Valentine's Day.

More episodes

The Big Bang Theory

S5, EP19 "The Weekend Vortex"

Sheldon chooses to participate in a guys-only weekend Star Wars gaming marathon rather than go with Amy to her aunt's birthday party; he gets a lesson from Penny and Amy.

The Big Bang Theory

S5, EP20 "The Transporter Malfunction"

When Penny buys Leonard and Sheldon "Star Trek" collectibles, Sheldon finds himself haunted by Mr. Spock; after a blind date, Raj believes he has met his future wife.

The Big Bang Theory

S5, EP21 "The Hawking Excitation"

When Stephen Hawking comes to lecture at the university for a week, Wolowitz is given the task of maintaining his wheelchair, making Sheldon green with envy.

The Big Bang Theory

S5, EP22 "The Stag Convergence"

Knowledge of Howard's sexual history makes Bernadette reconsider their future together.

The Big Bang Theory

S8, EP19 "The Skywalker Incursion"

When Sheldon and Leonard are asked to speak at UC Berkeley, they take a detour in hope of meeting an idol; Raj and Amy try to settle a dispute between Howard and Bernadette with a game of pingpong.

The Big Bang Theory

S8, EP5 "The Focus Attenuation"

During their weekend in Las Vegas, Bernadette and Amy accuse Penny of being a buzz kill; the guys try to invent the next big thing.

The Big Bang Theory

S8, EP1 "The Locomotion Interruption"

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.

Mensa-fied best friends and roommates Leonard and Sheldon, physicists who work at the California Institute of Technology, may be able to tell everybody more than they want to know about quantum physics, but getting through most basic social situations, especially ones involving women, totally baffles them. How lucky, then, that babe-alicious waitress/aspiring actress Penny moves in next door. Frequently seen hanging out with Leonard and Sheldon are friends and fellow Caltech scientists Wolowitz and Koothrappali. Will worlds collide? Does Einstein theorize in the woods?
Starring: Aarti Mann, Alice Amter, Brian George, Jim Parsons, John Ross Bowie, Johnny Galecki, Joshua Malina, Kaley Cuoco, Kevin Sussman, Kunal Nayyar, Mayim Bialik, Melissa Rauch, Rati Gupta, Sara Gilbert, Simon Helberg
Original Air Date: Sep 24, 2007
Genres: ComedyTV Series
Rating: TVPG
Playback: HD
5 seasons available on demand
Available on

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