The show has received the People's Choice Award for favorite comedy and, for Jim Parsons, an Emmy and a Golden Globe. Here's the full story on the sciencey sitcom.

A is for awards—The Big Bang Theory has been showered with awards for being the smartest and funniest TV sitcom around. B is for Barenaked Ladies—read all about the band that performed the show's famous theme song, "The History of Everything." C is for Caltech—find out more about the world-famous university where our favorite four Big Bang characters work. From special guests like Katee Sackhoff and River Glau, to predecessor shows like Beauty and the Geek and The IT Crowd, it's all here.