1: 1. Sheldon's quirky antics 2. Leonard's nerd humor 3. Penny's wild adventures

2: 4. Raj's romantic mishaps 5. Howard's sci-fi obsession 6. Bernadette's sassy comebacks

3: 7. Stuart's comic book store shenanigans 8. Amy's scientific breakthroughs 9. Wil Wheaton's celebrity cameos

4: 10. Crossover with Young Sheldon 11. Raj's hilarious dating escapades 12. Penny and Leonard's parenting struggles

5: 13. Howard's space travel dreams 14. Sheldon and Amy's science experiments 15. Guest appearances by past cast members

6: 16. Bernadette's mom moments 17. Stuart's oddball inventions 18. Sheldon's rivalry with Barry Kripke

7: 19. Fun with the gang at Comic-Con 20. Penny and Leonard's anniversary mishaps 21. Raj's latest crush

8: 22. Howard and Bernadette's parenting challenges 23. Sheldon's obsession with trains 24. Amy's new research project

9: 25. Raj's awkward encounters 26. Stuart's attempts at stand-up comedy 27. Penny's career opportunities.

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