Contains all 23 episodes from the second season, originally broadcast on television during the 2008-2009 season, plus bonus features on 4 discs.

Special features: Physicist to the stars: real-life physicist/UCLA professor David Saltzberg's consulting relationship to the show ; Testing the infinite hilarity hypothesis in relation to the Big bang theory: Season two's unique characters and characteristics ; gag reel.

Disc 1. The bad fish paradigm -- The codpiece topology -- The barbarian sublimation -- The Griffin equivalency -- The Euclid alternative -- The Cooper-Nowitzki theorem -- Disc 2. The panty pinata polarization -- The lizard-Spock expansion -- The white asparagus triangulation -- The Vartabedian conundrum -- The bath item gift hypothesis -- The killer robot instability -- Disc 3. The friendship algorithm -- The financial permeability -- The maternal capacitance -- The cushion saturation -- The Terminator decoupling -- The work song nanocluster -- Disc 4. The dead hooker juxtaposition -- The Hofstadter isotope -- The Vegas renormalization -- The classified materials turbulence -- The monopolor expedition.

Created by Chuck Lorre & Bill Prady ; various episode writers & directors.

Johnny Galecki, Kaley Cuoco, Jim Parsons, Simon Helberg, Kunal Nayyar and Sara Gilbert.

"The science of funny is back! At work, physicists Leonard and Sheldon and their geek pals conquer the cosmos. At home, real life - from dating to driving - conquers them. This season, Leonard gets a girl. So does Sheldon. (Sheldon?!) Howard drives the Mars Rover into a ditch. Raj woos a terminator. Gorgeous girl-next-door Penny falls under the spell of Age of Conan. And super-smart, uberconfident Leslie Winkler reduces mere men to spineless jellyfish. Twenty-three laugh-filled episodes from series creators Chuck Lorre (Two and a Half Men) and Bill Prady (Gilmore Girls) and a talented cast with astronomical comedy I.Q.s show why Big Bang is such a big hit."--Container.

Home use only.