The second season of the American television sitcom The Big Bang Theory aired on CBS from September 22, 2008 to May 11, 2009. A DVD consisting of all 23 episodes of the season was released on September 15, 2009, and a Blu-ray version was reissued on July 10, 2012, with remastered surround sound audio, whereas the DVD version only had stereo. Jim Parsons submitted the episode "The Bath Item Gift Hypothesis" for consideration due to his nomination for the Primetime Emmy Award for Outstanding Lead Actor in a Comedy Series at the 61st Primetime Emmy Awards. In 2009, TV Guide ranked the episode #60 on its list for the 100 Greatest Episodes. Christine Baranski submitted the episode "The Maternal Capacitance" for consideration due to her nomination for the Primetime Emmy Award for Outstanding Guest Actress in a Comedy Series at the 61st Primetime Emmy Awards.

Cast

Main cast

Recurring cast

Guest cast

Episodes

Reception

Compared to season one, the second season received critical acclaim. Jessica Paff of Screener wrote that "if they can keep the funny coming, I will keep watching", Ken Tucker of Entertainment Weekly praised the improvements to the character of Sheldon Cooper, writing that "Prickly Sheldon has become a character to love, and [actor Jim] Parsons is doing something rare on network TV: making intellectualism admirable, even heroic", and James Chamberlin of IGN wrote that "Jim Parsons is a riot and is reason enough to tune in each week."