The Big Bang Theory: The Complete Fourth Season (DVD, 2011, Widescreen)-052 Get ready to laugh out loud with "The Big Bang Theory: The Complete Fourth Season" on DVD. This 2011 release features all 24 episodes in widescreen format, perfect for a binge-watch session. This DVD is set to Region Code 1 (US, Canada...), with English as the language option. The tall/DVD case contains one unit of the Standard Edition, ideal for collectors. Don't miss out on this hilarious sitcom that follows the lives of a group of nerdy friends and their adventures in science and romance.