The Big Bang Theory

2. The Decoupling Fluctuation

Penny continues to have doubts about her relationship with Leonard. Meanwhile...

3. The Higgs Boson Observation

When Sheldon hires a female grad student to assist him, a jealous Amy asks Pe...

4. The Re-Entry Minimization

Howard is offended when his return from space is met with little fanfare. Pen...

5. The Holographic Excitation

While Raj plans Stuart's Halloween party at the comic book store, Howard anno...

6. The Extract Obliteration

Penny enrolls in a college class and keeps it a secret from Leonard. Sheldon ...

7. The Habitation Configuration

Howard makes a decision whether or not to move out of his mother's house, whi...

8. The 43 Peculiarity

Leonard feels threatened after hearing about Penny's study partner at school,...

9. The Parking Spot Escalation

The gang are drawn into a fight between Howard and Sheldon over Sheldon's vac...

10. The Fish Guts Displacement

Howard tries to bond with Bernadette's father during a fishing trip. When She...

11. The Santa Simulation

The girls take Raj out to a nightclub to find him a date. A game of Dungeons ...

12. The Egg Salad Equivalency

When Penny finds out Alex has a crush on Leonard, Sheldon gets himself and th...

13. The Bakersfield Expedition

The guys are stranded in the middle of nowhere when Leonard's car is stolen o...

14. The Cooper/Kripke Inversion

Sheldon is forced to work with Kripke on a project and must concoct an elabor...

15. The Spoiler Alert Segmentation

Leonard moves in with Penny after a fight with Sheldon, which causes Amy to w...

16. The Tangible Affection Proof

Sheldon gets Alex to buy a Valentine's Day gift for Amy. Leonard, Penny, Howa...

17. The Monster Isolation

Raj falls apart after his date sneaks out on him, and Sheldon reluctantly ret...

18. The Contractual Obligation Implementation

Leonard, Sheldon and Howard give lectures on science to junior high students....

19. The Closet Reconfiguration

Howard becomes upset when Sheldon finds a letter from his estranged father wh...

20. The Tenure Turbulence

Leonard, Sheldon, Raj and Kripke battle for tenure at the university.

21. The Closure Alternative

Amy tries to help a depressed Sheldon find closure when one of his favorite T...

22. The Proton Resurgence

Bernadette and Howard offer to watch Raj's dog and live to regret it. Leonard...

23. The Love Spell Potential

A date between Raj and Lucy takes both of them out of their comfort zones. Af...

24. The Bon Voyage Reaction

Penny is thrown for a loop when Leonard is offered a job overseas, but the ne...