Even by sitcom standards, "The Big Bang Theory" has plenty of colorful characters. However, the show tends to keeps a tight focus on the original core group of Sheldon (Jim Parsons), Leonard (Johnny ...

Stuart Bloom (Kevin Sussman) is the kind of character who starts out as a running joke but ends up as a central piece of the story. He’s the total opposite of the nerdy arrogance of the main group: ...