The Big Bang Theory ...
Penny tags along on Sheldon's first date; Wolowitz finds a new use for a robotic arm.
The Big Bang Theory ...
While Penny worries that dating Leonard has ruined her for normal guys, Wolowitz and Koothrappali search for Sheldon's perfect match online.
The Big Bang Theory ...
Leonard tells Penny about how he met Sheldon for the first time...and what happened to the elevator.
The Big Bang Theory ...
When Leonard and Penny aren't speaking, Sheldon goes to extremes to keep them both happy.
The Big Bang Theory ...
A fight between Leonard and Penny threatens their relationship, while Sheldon battles Wil Wheaton in bowling.
The Big Bang Theory ...
Sheldon's fear of speaking in public threatens his ability to accept an award.
The Big Bang Theory ...
The discovery of a prop ring from The Lord of the Rings movies puts a strain on the guys' friendship.
The Big Bang Theory ...
Leonard faces a dilemma in choosing between Sheldon or Penny to accompany him to Switzerland to see CERN's Large Hadron Collider on Valentine's ...
The Big Bang Theory ...
Leonard faces a dilemma in choosing between Sheldon or Penny to accompany him to Switzerland to see CERN's Large Hadron Collider on Valentine's ...
The Big Bang Theory ...
Sheldon ends up working with Penny at The Cheesecake Factory to help solve a physics problem.
The Big Bang Theory ...
A robbery of their apartment sees Leonard and Sheldon call on their friends to devise a security system.
The Big Bang Theory ...
While Sheldon and Koothrappali attend a university mixer, Leonard is upset to discover that Penny believes in psychics.
The Big Bang Theory ...
Sheldon vows payback after Kripke humiliates him on the radio. Howard gets advice concerning his relationship with Bernadette...from "Battlestar Galactica's" Katee Sackhoff.
The Big Bang Theory ...
Penny separates her shoulder in the bathtub, and is forced to turn to Sheldon for help. Meanwhile, the rest of the guys accidentally get stoned ...
