The first season of the American sitcom The Big Bang Theory aired on CBS from September 24, 2007 to May 19, 2008. The Season 1 DVD came without a gag reel and is, so far, the only Big Bang Theory DVD set not to have one. The reissued Blu-ray, which was released on July 10, 2012, includes a gag reel that is exclusive to the set. The episodes on Blu-ray are all in remastered surround sound, whereas the DVD version had stereo. Two of the main characters, Sheldon and Leonard, are named after actor, director, and producer Sheldon Leonard.

Sara Gilbert is an American actress best known for her role as Darlene Conner on the ABC sitcom Roseanne, for which she received two Primetime Emmy Award nominations, and its spin-off, The Conners (2018–present). She is also creator and former co-host of the CBS daytime talk show The Talk and had a main role as Leslie Winkle in the second season of CBS' The Big Bang Theory, following a recurring role in the first season.