The Big Bang Theory: Season 4 was released today on Blu-ray and DVD in the United States and Canada. The two disc Blu-ray and three disc DVD boxset include all twenty-four episodes of the 2010/11 season along with these exclusive bonus features: Actor on Actor: The Big Bang's Theory of Relativity Featurette, The Barenaked Ladies on Big Bang Theory Featurette, The History of Everything Music Video and a Gag Reel. Episodes are presented in widescreen with Dolby Digital 5.1 Surround Sound (DVD)/DTS -HD Master Audio (Blu-ray). The episodes have English audio track and English, French and Spanish subtitles.

Order The Big Bang Theory: Season 4 DVD now from Amazon.com or order the Blu-ray version.

In the United Kingdom and Ireland, Season 4 is coming to DVD on Monday, September 26th. Pre-order your copy from Amazon.co.uk now. In Australia and New Zealand, the fourth season DVD and Blu-ray will be released Wednesday, October 5th.

This story was originally published on The Big Bang Theory Site.

Katie Leclerc, star of the ABC Family drama Switched at Birth, will be guest starring on The Big Bang Theory, according to The Hollywood Reporter. Leclerc, who is hard-of-hearing and plays a deaf character on Switched at Birth, will play Emily, a deaf character and potential love interest of Raj, who suffers selective mutism around women.

Raj and Emily will reportedly be brought together by Penny, who sets the pair up on a date in the October 6 episode of the show.

This story was originally published on The Big Bang Theory Site.

CBS has announced the second episode of the fifth season. The show returns Thursday, September 22nd at 8/7c with two back-to-back episodes, the first of which was announced last week.

"The Infestation Hypothesis" - A fight between Sheldon and Penny leaves Amy caught in the middle, while Leonard tries to spice up his long-distance relationship with Priya, on THE BIG BANG THEORY, at a special time, Thursday Sept. 22 (8:30-9:00 PM, ET/PT) on the CBS Television Network.

You can find more information about the episode in our Episode Guide.

This story was originally published on The Big Bang Theory Site.

The cast of The Big Bang Theory will be a hosting a primetime special previewing CBS's fall schedule. Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg and Kunal Nayyar will introduce fans to CBS's upcoming sitcoms and drama series.

The cast, appearing as themselves, will introduce video previews for new shows while interjecting character-related jokes about one-another. The shows being previewed are: 2 Broke Girls, a sitcom starring Kat Dennings and Beth Behrs as two cash-strapped waitresses who hope to start a business; Unforgettable, a drama about a female NYPD detective with an incredible ability to remember everything, which is both a blessing and a burden; Person of Interest, a new drama from J.J. Abrams and Jonathan Nolan about a former-CIA agent who teams up with a mysterious billionaire to prevent crime; How to be a Gentleman, a comedy about the unlikely friendship between a refined writer and an unrefined, personal trainer with a reputation for being a "bad boy"; and A Gifted Man, a drama about a brilliant surgeon whose deceased ex-wife begins teaching him the meaning of life from the "hereafter".

The special will be broadcast on Thursday, September 8th at 8:30/7:30c on CBS, immediately following an episode of The Big Bang Theory.

This story was originally published on The Big Bang Theory Site.

CBS has announced the fifth season premiere of The Big Bang Theory. The show returns to its Thursday at 8/7c slot on September 22nd with two back-to-back original episodes. The first of those episodes was announced today and sees Penny worrying about the consequences of the awkward situation in which she found herself at the end of last season. Christine Baranski (The Good Wife) returns as Beverly Hofstadter in the episode.

"The Skank Reflex Analysis" - Penny worries that she’s screwed things up permanently with her friends, while Sheldon takes command of the paintball team, on the fifth season premiere of THE BIG BANG THEORY, Thursday, Sept. 22 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Christine Baranski (“The Good Wife”) reprises her role as Leonard’s mother.

You can find out more about the episode in our Episode Guide.

This story was originally published on The Big Bang Theory Site.