Anybody mind if I go one step beyond for my list?
11. Queen's Blade
10. Lucky Star
9. Azumanga Daioh
8. Ultimate Girls
7. Kekko Kamen
6. Strawberry Marshmallow
5. Naruto
4. Strawberry Panic
3. Bleach
Magic swords, martial arts, good fights and Lisa. What more could you want?
2. Popotan
Starts off looking like stand alones but soon reveals the story about what is going on.
I also like the bath scenes.
1. Strike Witches
A lot of good action, an in depth story about the battle with the neuroi and a lot of fanservice.