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Leonard, Sheldon and Wolowitz file for a patent on their new invention; Penny, Amy and Bernadette give dating advice to Koothrappali after his breakup with Emily.

Leonard, Sheldon and Wolowitz file for a patent on their new invention; Penny, Amy and Bernadette give dating advice to Koothrappali after his breakup with Emily.

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The Big Bang Theory

S2, EP13 "The Friendship Algorithm"

Sheldon develops a scientific procedure for making friends; Kripke controls a new supercomputer.

The Big Bang Theory

S9, EP1 "The Matrimonial Momentum"

Sheldon struggles to understand what is going on with Amy; Penny must decide if she can get past Leonard's bad behavior.

The Big Bang Theory

S9, EP2 "The Separation Oscillation"

Leonard tries to ease Penny's mind; Sheldon plans a special episode of "Fun With Flags"; Bernadette feels bad about keeping a secret.

The Big Bang Theory

S9, EP3 "The Bachelor Party Corrosion"

A flat tire during Leonard's bachelor party weekend in Mexico tests the guys' skills; Penny is compelled to tell her family that she and Leonard eloped.

The Big Bang Theory

S9, EP23 "The Line Substitution Solution"

Sheldon wants to go to a movie screening, so he pays Stuart to spend the day with Amy; Penny has a difficult time connecting with Leonard's visiting mother.

The Big Bang Theory

S9, EP22 "The Fermentation Bifurcation"

The gang runs into Penny's old boyfriend while out at a wine bar; Bernadette spends an evening with Sheldon; Koothrappali's introduction of his new girlfriend doesn't go as planned.

The Big Bang Theory

S9, EP21 "The Viewing Party Combustion"

During a group get-together, a minor argument between Sheldon and Leonard turns into a heated debate, leaving the rest of the gang to choose sides.

The Big Bang Theory

S9, EP20 "The Big Bear Precipitation"

Sheldon shares a secret about Leonard when the two go on a weekend trip with Penny and Amy; Koothrappali goes all out with pregnancy gifts.

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