Right now I'm in the middle of:

Naruto
One Piece
Prince of Tennis
Gantz
Samurai Champloo
Midori no Hibi
Tenjou Tenge
Noir
Scyred
Monster
Chrno Crusade
Bakuretsu Tenshi
GITS 2nd GIG

and probably 1 or 2 others. While some of these I haven't seen recently, and don't download or rent each week, I do have active plans to finish them and start other series by the end of the summer.