The Big Bang Theory DVDs bring many hilarious seasons of the guys of geekdom and their pretty co-ed neighbor to you. Having an introverted day? Put on a Big Bang Theory DVD or watch it with your own troupe of astrophysicists! Bang Theory Blu Ray and videos are a great way to go back and visit your favorite series or become a new fan. With series creators Chuck Lorre (Two and a Half Men) and Bill Prady (The Gilmore Girls), these Big Bang Theory videos are big on Sigma Pi Sigma laughs.