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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?
S3, EP22 "The Staircase Implementation"
Leonard tells Penny about how he met Sheldon and what happened to the elevator.
S3, EP14 "The Einstein Approximation"
Sheldon tries to figure out the answer to a physics problem by working with Penny.
S3, EP15 "The Large Hadron Collision"
Leonard must choose who to bring with him when he goes to see the Large Hadron Collider on Valentine's Day.
S3, EP16 "The Excelsior Acquisition"
Sheldon ends up in traffic court after getting a ticket because of Penny.
S3, EP15 "The Large Hadron Collision"
Leonard must choose who to bring with him when he goes to see the Large Hadron Collider on Valentine's Day.
S3, EP14 "The Einstein Approximation"
Sheldon tries to figure out the answer to a physics problem by working with Penny.
S3, EP13 "The Bozeman Reaction"
After their apartment is robbed, Leonard and Sheldon turn to their friends to create a state-of-the-art security system.
S3, EP12 "The Psychic Vortex"
Sheldon and Koothrappali attend a university mixer; Leonard discovers that Penny believes in psychics.
