Simon Helberg was not the first choice to play Howard on The Big Bang Theory, and he didn't learn that until much later.

Simon Helberg and Melissa Rauch didn't become quite as close as their characters on "The Big Bang Theory," but Helberg did made a big sacrifice for his co-star.

Wolowitz learns that Bernadette wasn't the only waitress at the Cheesecake Factory who had a crush on him. Koothrappali is worried people won’t take him seriously in his own field after publishing a ...