Minami-ke
Jigoku Shoujo (Hell Girl)
Seitokai no Ichizon
K-ON
Dance in the Vampire Bund
To Aru (Index & Railgun)
Kampfer
Full Metal Panic!
Ikki Tousen
Koihime Musou
Rosario + Vampire
Skip Beat!
and Elven Lied
DBZ long time ago, but now Bleach and Naruto Shippuden <33
Those are all great, I'm a fan. I wish that they would stop making filler episodes for Naruto though... I really value being able to finish a series in a weekend. A favorite example of that is Gundam: 08th MS Team.
Bleach or full metal alk brotherhood series wise but if were talking anime period i'm going to go with the classic "Ninja scroll 1 " part 2 was good too
Hellsing Ultimate... they just need to continue making them gdi. Or at least making the english ones they already did in jp since I can't find a well encoded fansub