The Big Bang Theory, Sheldon Cooper and Chuck Lorre

One Young Sheldon character was only supposed to show up in one episode, but then they kept coming back again and again.
The Big Bang Theory eventually revealed what became of Tam, one of the few people Sheldon Cooper tolerated as a kid genius on ...
Stuart's The Big Bang Theory spinoff is moving up the development process, as it casts its 4th returning character from the ...