The Big Bang Theory

1. The Bad Fish Paradigm

Leonard's anxiety grows as Penny's dates with him suddenly stop and she becom...

2. The Codpiece Topology

Leonard's encounter with Leslie Winkle brings temporary solace after Penny is...

3. The Barbarian Sublimation

Sheldon's foray into online gaming sparks a chain reaction, with Penny becomi...

4. The Griffin Equivalency

A sudden surge in celebrity status causes tension among the friends as Raj's ...

5. The Euclid Alternative

Sheldon's driving lessons go awry, leaving Leonard at his wit's end and the g...

6. The Cooper-Nowitzki Theorem

A graduate student's growing attraction to Sheldon is met with his inability ...

7. The Panty Piñata Polarization

Penny is driven by a desire for revenge after being forbidden from her friend...

8. The Lizard-Spock Expansion

Leonard's new romantic interest sparks a rivalry with Howard, threatening to ...

9. The White Asparagus Triangulation

Leonard's new romance with Stephanie is put to the test as Sheldon's overbear...

10. The Vartabedian Conundrum

Leonard's relationship with Stephanie takes an unexpected turn as he struggle...

11. The Bath Item Gift Hypothesis

Penny's growing fascination with a charming physicist from the university set...

13. The Friendship Algorithm

Sheldon's strategy to win over Kripke is designed to grant him access to a hi...

14. The Financial Permeability

When Penny's financial troubles put her rent in jeopardy, Leonard and Sheldon...

15. The Maternal Capacitance

Leonard's mother, a psychoanalyst, surprisingly forms a strong connection wit...

16. The Cushion Saturation

Romantic tensions and household conflicts take center stage in the next episo...

17. The Terminator Decoupling

A group of friends engage in a lighthearted competition on a train to San Fra...

18. The Work Song Nanocluster

Penny's home-based business sees an unexpected boom in popularity, largely du...

19. The Dead Hooker Juxtaposition

A charismatic newcomer wins over Leonard, Howard, and Raj, leaving Penny to w...

20. The Hofstadter Isotope

Leonard's confidence takes a hit when the comic book store owner asks Penny o...

21. The Vegas Renormalization

The guys embark on a trip to Las Vegas to temporarily escape their romantic w...

22. The Classified Materials Turbulence

Leonard's world is turned upside down when Penny's second date with Stuart ta...

23. The Monopolar Expedition

Penny's gloomy mood spoils the group's North Pole summer plans, casting a dar...