Penny & Leonard's Valentine's
Who would guess that Penny and Leonard's Valentine's day wouldn't go as planned on The Big Bang Theory? "The Tangilble Affection of Proof" is the 16th episode of the show's sixth season.
More The Big Bang Theory Pictures
Show: The Big Bang Theory
Episode: "The Tangible Affection of Proof"
Characters: Leonard Hofstadter, Penny
Original Post: The Big Bang Theory Review: Romance Ninja
Date Added: 02/13/13
Location: Los Angeles, California
Photo Credit: CBS