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While Leonard prepares for a three-month science expedition, he and Penny re-evaluate their feelings for each other.

Starring: Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg
More
Original Air Date: May 11, 2009

While Leonard prepares for a three-month science expedition, he and Penny re-evaluate their feelings for each other.

Starring: Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg
More
Original Air Date: May 11, 2009

How to watch

More episodes

FOX • Tomorrow, 12:00am • 30m

The Big Bang Theory

S3, EP6 "The Cornhusker Vortex"

Sheldon teaches Leonard how to understand football; a kite-fighting incident threatens Howard and Raj's friendship.

FOX • Tomorrow, 12:30am • 30m

The Big Bang Theory

S11, EP12 "The Matrimonial Metric"

Sheldon and Amy subject their friends to a series of secret experiments to discover which two would be most qualified to be the best man and the maid of honor at their wedding; Penny reveals her true feelings about Amy.

Nickelodeon • Tomorrow, 3:00am • 30m

The Big Bang Theory

S2, EP23 "The Monopolar Expedition"

While Leonard prepares for a three-month science expedition, he and Penny re-evaluate their feelings for each other.

Nickelodeon • Tomorrow, 3:30am • 30m

The Big Bang Theory

S3, EP7 "The Guitarist Amplification"

Sheldon tries to make peace when Leonard and Penny get into an argument.

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
4 seasons available on demand
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