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, überconfident 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.

Episodes:
1. The Bad Fish Paradigm
2. The Codpiece Topology
3. The Barbarian Sublimation
4. The Griffin Equivalency
5. The Euclid Alternative
6. The Cooper-Nowitzki Theorem
7. The Panty Piñata Polarization
8. The Lizard-Spock Expansion
9. The White Asparagus Triangulation
10. The Vartabedian Conundrum
11. The Bath Item Gift Hypothesis
12. The Killer Robot Instability
13. The Friendship Algorithm
14. The Financial Permeability
15. The Maternal Capacitance
16. The Cushion Saturation
17. The Terminator Decoupling
18. The Work Song Nanocluster
19. The Dead Hooker Juxtaposition
20. The Hofstadter Isotope
21. The Vegas Renormalization
22. The Classified Materials Turbulence
23. The Monopolar Expedition