A quick glance allowed me to narrow it down to a list of 32 episodes. Not one from season one made the list -- wow, that was an abysmal stretch of sf television. I'd narrow it down to twenty, but that would mean having to renumber them, and I'm feeling a bit lazy at the moment.
1. The Measure of a Man (s2)
2. Contagion
3. Q Who
4. The Survivors (s3)
5. The Enemy
6. The Defector
7. Yeserday's Enterprise
8. Sins of the Father
9. Sarek
10. The Best of Both Worlds, Part I
11. The Best of Both Worlds, Part II (s4)
11. Family
12. Reunion
13. The Mind's Eye
14. Ensign Ro (s5)
15. Cause and Effect
16. The First Duty
17. The Next Phase
18. The Inner Light
19. Relics (s6)
20. Chain of Command, Part II
21. Ship in a Bottle
22. Tapestry
23. Starship Mine
24. Frame of Mind
25. Second Chances
26. Timescape
27. Phantasms (s7)
28. Parallels
29. Lower Decks
30. Masks
31. Preemptive Strike
32. All Good Things...
1. The Measure of a Man (s2)
2. Contagion
3. Q Who
4. The Survivors (s3)
5. The Enemy
6. The Defector
7. Yeserday's Enterprise
8. Sins of the Father
9. Sarek
10. The Best of Both Worlds, Part I
11. The Best of Both Worlds, Part II (s4)
11. Family
12. Reunion
13. The Mind's Eye
14. Ensign Ro (s5)
15. Cause and Effect
16. The First Duty
17. The Next Phase
18. The Inner Light
19. Relics (s6)
20. Chain of Command, Part II
21. Ship in a Bottle
22. Tapestry
23. Starship Mine
24. Frame of Mind
25. Second Chances
26. Timescape
27. Phantasms (s7)
28. Parallels
29. Lower Decks
30. Masks
31. Preemptive Strike
32. All Good Things...