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- Season 8 overviewSep 22, 2014-May 7, 201524 episodesSeason 8 episodes1. The Locomotion Interruption Sep 22, 2014
- Leonard and Amy make an unexpected trip to Arizona to fetch Sheldon; Penny goes for an interview.
- 2. The Junior Professor Solution Sep 22, 2014
- Amy takes advantage of the tension between Penny and Bernadette.
- 3. The First Pitch Insufficiency Sep 29, 2014
- Wolowitz feels nervous when he is asked to throw the first pitch at a Los Angeles Angels game.
- 4. The Hook-Up Reverberation Oct 6, 2014
- Raj's honesty comes back to haunt him when his new girlfriend is unfriendly to Penny.
- 5. The Focus Attenuation Oct 13, 2014
- During their weekend in Las Vegas, Bernadette and Amy accuse Penny of being a buzz kill.
- 6. The Expedition Approximation Oct 20, 2014
- Raj and Sheldon try to simulate a dark-matter research expedition; Penny and Leonard have a fight.
- 7. The Misinterpretation Agitation Oct 30, 2014
- The guys try to help when Penny is faced with an awkward dilemma at work.
- 8. The Prom Equivalency Nov 6, 2014
- Sheldon feels pressured to participate in traditions when the gang re-creates a high-school prom.
- 9. The Septum Deviation Nov 13, 2014
- Leonard has minor surgery on his nose, causing Sheldon to overreact.
- 10. The Champagne Reflection Nov 20, 2014
- Howard, Leonard and Raj look through their dead professor's research.
- 11. The Clean Room Infiltration Dec 11, 2014
- Leonard and Wolowitz clash over a work emergency; Sheldon resents having to celebrate the holidays.
- 12. The Space Probe Disintegration Jan 8, 2015
- The guys agree to do something the girls like; Leonard and Sheldon butt heads.
- 13. The Anxiety Optimization Jan 29, 2015
- Sheldon asks his friends to challenge him in hope of achieving a scientific breakthrough.
- 14. The Troll Manifestation Feb 5, 2015
- Sheldon and Leonard must defend themselves from an online bully's criticism after writing a paper.
- 15. The Comic Book Store Regeneration Feb 19, 2015
- The gang waits for the reopening of the comic book store; Wolowitz gets some shocking news.
- 16. The Intimacy Acceleration Feb 26, 2015
- Penny and Sheldon design an experiment -- as a joke -- to make participants fall in love.
- 17. The Colonization Application Mar 5, 2015
- Amy finds out that Sheldon applied for a one-way mission to colonize Mars.
- 18. The Leftover Thermalization Mar 12, 2015
- A magazine article only credits Sheldon in an article about a paper he co-wrote with Leonard.
- 19. The Skywalker Incursion Apr 2, 2015
- While on their way to UC Berkeley, Sheldon and Leonard take a detour in hope of meeting an idol.
- 20. The Fortification Implementation Apr 9, 2015
- Sheldon and Amy build a blanket fort; Wolowitz meets a half-brother he didn't know he had.
- 21. The Communication Deterioration Apr 16, 2015
- The guys fight over a message that could be used for alien contact.
- 22. The Graduation Transmission Apr 23, 2015
- Wolowitz questions his engineering skills; a canceled flight puts Leonard's plans in jeopardy.
- 23. The Maternal Combustion Apr 30, 2015
- When Sheldon's and Leonard's mothers finally meet, personalities collide.
- 24. The Commitment Determination May 7, 2015
- While facing relationship changes, Sheldon pushes Penny and Leonard to choose a wedding date.