Watch Tsubasa Chronicle and xxxHOLiC - both by CLAMP though i think xxxHOLiC is a bit better based on the anime, but then again, the latest Tsubasa manga chapter is a shocker >_< I can't wait to see it animated, so long as they don't ruin it
Then there's Naruto and Bleach, which are being discussed on the other thread. And Ah! My Goddess is ace just for the prettiness of it all.
If you don't want to watch unfinished anime, then i'd suggest Coyboy Bebop, Samurai Champloo, Full Metal Alchemist (though the ending disappointed me, dunno why but it just didn't feel right), Eva, RahXephon...i could go on, but i won't
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The shadow proves the sunshine...
"This is my story. It'll go the way I want, or I'll end it here"
--Final Fantasy X