Anime/Sentai episode I haven't seen:

Anime:
1. BLEACH episodes: 130-144
2. Darker Than Black episodes: 6-25
3. D.Gray-Man epsiodes: 50-54
4. Detective Conan epsiodes: 90-488
5. Gundam 00 episodes: 1-3
6. E's Otherwise episodes: 16-26
7. GetBackers episodes: 40-49
8. Kyou Kara Maou episodes: 38-78
9. Ghost Hunt episodes: 20-24
10. Loveless episodes: 9-12
11. Saiyuki Reload OVA
12. Gundam Seed Season 1 episode: 14-52
13. Gundam Seed Destiny Season 2
14. X(tv) episodes: 16-24
15. Tsubasa Chronicle Season 2
16. Mononoke episodes: 8-12
17. Gash Bell episodes: 20 -152
18. Death Note episode: 7-37
19. Prince of Tennis episodes: 140-178
^.^ There might be even more, but I can't think up anymore for now.

Sentai:
*I forgot whats episodes am on.. so I will just say what sentai I haven't seen yet.*
1. Gingaman
2. Gaoranger
3. Goranger
4. Hurricanger
5. Dekaranger
6. Magiranger
7. Boukenger
Yet, again there may be more, but I can't think up anymore :p