In some ways, the actors who play Sheldon and Penny on Big Bang Theory share something with their characters: love. That was no clearer than in 2011.

Sheldon Cooper allowed very few people to call him by a nickname. His mother and sister, Missy Cooper, referred to him as Shelly. His grandmother, affectionately known as MeeMaw, called Sheldon ...

As you may recall, the episode starts with Sheldon (Jim Parsons) playing an MMORPG called Age of Conan when he is interrupted by Penny, who is having an emotional breakdown out in the hallway. She is ...