I'd don't read much manga but as far as anime goes in no particular order....
1. Sailor Moon (JAPANESE VERSION ONLY)
2. Black Butler
3. Hellsing Ultimate
4. Hell Girl (Japanese Version Only)
5. Hetalia
6. Pet Shop of Horrors
7. Death Note (Japanese Version Only)
8. Slayers
9. Bubblegum Crisis (NOT THE NEW ONE)
10. Cowboy Bebop
1. Sailor Moon (JAPANESE VERSION ONLY)
2. Black Butler
3. Hellsing Ultimate
4. Hell Girl (Japanese Version Only)
5. Hetalia
6. Pet Shop of Horrors
7. Death Note (Japanese Version Only)
8. Slayers
9. Bubblegum Crisis (NOT THE NEW ONE)
10. Cowboy Bebop