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- Season 11 overviewSep 25, 2017-May 10, 201824 episodesSeason 11 episodes1. The Proposal Proposal Sep 25, 2017
- Amy answers Sheldon's marriage proposal; Howard and Bernadette struggle with unexpected news.
- 2. The Retraction Reaction Oct 2, 2017
- Leonard's job is at stake after he gives an embarrassing radio interview; Amy and Bernadette bond.
- 3. The Relaxation Integration Oct 9, 2017
- As Sheldon stresses about picking a wedding date, Amy tells him he can be more easygoing.
- 4. The Explosion Implosion Oct 16, 2017
- Wolowitz and Sheldon bond over having disappointing fathers; Leonard's mother befriends Penny.
- 5. The Collaboration Contamination Oct 23, 2017
- Penny and Leonard learn a secret from an unlikely source about dealing with Sheldon.
- 6. The Proton Regeneration Nov 2, 2017
- Sheldon auditions for the role of the new Professor Proton; Penny takes care of Halley.
- 7. The Geology Methodology Nov 9, 2017
- Sheldon tries to keep his collaboration with Bert a secret; Penny and Bernadette coach Koothrappali.
- 8. The Tesla Recoil Nov 16, 2017
- Leonard and Wolowitz are furious to learn Sheldon worked with the military behind their backs.
- 9. The Bitcoin Entanglement Nov 30, 2017
- Sheldon tries to teach the guys a lesson after being cut out of a potentially valuable investment.
- 10. The Confidence Erosion Dec 7, 2017
- Sheldon and Amy try to use math to eliminate wedding planning stress.
- 11. The Celebration Reverberation Dec 14, 2017
- Sheldon plans a dinner for Amy's birthday; Leonard receives a Christmas letter from his brother.
- 12. The Matrimonial Metric Jan 4, 2018
- Sheldon and Amy subject their friends to experiments; Penny reveals her feelings about Amy.
- 13. The Solo Oscillation Jan 11, 2018
- Sheldon kicks Amy out to work solo; Amy and Leonard bond during a series of science experiments.
- 14. The Separation Triangulation Jan 18, 2018
- Koothrappali learns the woman he's dating has a very upset husband; Sheldon rents his old room.
- 15. The Novelization Correlation Feb 1, 2018
- Sheldon petitions Wil Wheaton to appear on his show, but Wil offers a role to Amy instead.
- 16. The Neonatal Nomenclature Mar 1, 2018
- When Bernadette won't go into labor, her friends try different tactics to get things started.
- 17. The Athenaeum Allocation Mar 8, 2018
- Leonard jumps through hoops to help secure the perfect wedding venue for Sheldon and Amy.
- 18. The Gates Excitation Mar 29, 2018
- Penny gets the opportunity to host Bill Gates at work when his company wants to partner with hers.
- 19. The Tenant Disassociation Apr 5, 2018
- Leonard decides to run against Sheldon for president of the tenants association.
- 20. The Reclusive Potential Apr 12, 2018
- A brilliant but reclusive scientist invites Sheldon to his cabin in the middle of nowhere.
- 21. The Comet Polarization Apr 19, 2018
- Friendships are threatened when Koothrappali takes credit for Penny's astronomical discovery.
- 22. The Monetary Insufficiency Apr 26, 2018
- Sheldon tries to win money for science; Penny and Bernadette take Amy wedding dress shopping.
- 23. The Sibling Realignment May 3, 2018
- Sheldon's mother won't attend his wedding unless he invites his brother.
- 24. The Bow Tie Asymmetry May 10, 2018
- Amy's parents and Sheldon's family arrive; nearly everybody is focused on the wedding plans.