The Big Bang Theory first aired in 2007, and since then it has run for more than ten seasons. The sitcom has also garnered in excess of 50 awards and received the People’s Choice Award for Favorite Comedy twice. However, behind the scenes things perhaps haven’t always been quite so rosy.
Initially, the sitcom focused on a group of four nerdy guys – Leonard, Sheldon, Raj and Howard – who eventually befriend Penny, a waitress and wannabe actress. Through the course of the seasons, though, other characters have become more prominent. So, now the likes of Amy Farrah Fowler and Bernadette Rostenkowski-Wolowitz – portrayed by Mayim Bialik and Melissa Rauch, respectively – play vital roles in the show.