1. Fairy Tail
2. Black Butler
3. Fullmetal Alchemist: Brotherhood
4. Beelzebub
5. Soul Eater
6. Blue Exorcist
7. Elfen Lied
8. Higurashi When They Cry
9. SKET Dance
10. Ouran High School Host Club
Updating my list now.
1. Blue Exorcist
2. Fairy Tail
3. Death Note
4. Black Butler
5. Baccano!
6. Fullmetal Alchemist: Brotherhood
7. Soul Eater
8. Sora no Otoshimono
9. Toaru Majutsu no Index
10. Highschool of the Dead