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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.

Starring: Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg
More
Original Air Date: Feb 8, 2010

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

Starring: Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg
More
Original Air Date: Feb 8, 2010

How to watch

More episodes

Nickelodeon • Today, 3:00am • 30m

The Big Bang Theory

S3, EP23 "The Lunar Excitation"

Raj and Howard set up an online dating profile for Sheldon and find the perfect woman.

Nickelodeon • Today, 3:30am • 30m

The Big Bang Theory

S4, EP13 "The Love Car Displacement"

Bernadette runs into her ex-boyfriend (Rick Fox) while attending a science event with Wolowitz.

Nickelodeon • Today, 4:00am • 35m

The Big Bang Theory

S4, EP16 "The Cohabitation Formulation"

Wolowitz considers taking things with Bernadette to the next level; Leonard and Raj's sister rekindle their relationship.

Nickelodeon • Today, 4:35am • 35m

The Big Bang Theory

S4, EP17 "The Toast Derivation"

Sheldon is upset when he realizes Leonard is the center of their group of friends.

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, Brian George, Jim Parsons, John Ross Bowie, Johnny Galecki, Kaley Cuoco, Kaley Cuoco-Sweeting, Kevin Sussman, Kunal Nayyar, Laura Spencer, Mayim Bialik, Melissa Rauch, Sara Gilbert, Simon Helberg, Wil Wheaton
Original Air Date: Sep 24, 2007
Genres: ComedyTV Series
Rating: TVPG
Playback: HD
6 seasons available on demand
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