Well, DN Angel is my favourite, without a doubt. =D
But here's the whole liste of what I've seen (not that much compared to some others xD) The stars are ratings =)
-Pokemon ****
-Beyblade ****
-Fullmetal Alchemist *****
-.hack//Sign ***
-.hack//Roots
-.hack//legend of the twilight bracelet ***
-Black Cat ****
-The Law of Ueki ****
-DN Angel *****
-Air TV ****
-Clannad ****
-Fushigi Yuugi ***
-Chrno Crusade ***
-Shakugan no Shana ***
-Kanon 2006 ****
-...(I might be forgetting some... xD)
Anyways, your turn to give lists.
Oh yes, I have to more manga:
The legend of Zelda (Majora's Mask, Ocarina of Time, Four Swords, Oracle of Ages, Oracle of Seasons, Minish Cap, A Link to the Past, Link's Awakening)
Chrno Crusade
Lagoon Engine