My top Favorites?
In no specific order

Gankutsuou
Hellsing
Hunter X Hunter
Rah Xephon
Bleach (manga more so)
Naruto (Manga really...Japan)
Outlaw Star (heck yes)
One Piece (Japan)

Least Favorites
Don't really have any...
Really, anything brought here and dubbed/cut up.
Oh, and the posers. Like Code Lyoko.