The discovery of a prop ring from The Lord of the Rings movies puts a strain on the guys’ friendship.

Sheldon winds up in traffic court when he gets a ticket because of Penny.

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 Day.

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 Day.

Sheldon ends up working with Penny at The Cheesecake Factory to help solve a physics problem.

A robbery of their apartment sees Leonard and Sheldon call on their friends to devise a security system.

While Sheldon and Koothrappali attend a university mixer, Leonard is upset to discover that Penny believes in psychics.

Leonard’s mother makes a visit to his dismay and Sheldon’s delight.

Sheldon vows payback after Kripke humiliates him on the radio. Howard gets advice concerning his relationship with Bernadette…from “Battlestar Galactica’s” Katee Sackhoff.