F No Meikyuu
This one could definitely be the beginning of a great series... Hopefully it'll get updated.
Dirty Work
Reversal
I REALLY liked this... except what was that bit at the end, with the song playing again? And Daichi or whatever his name was waking up because of it? Aside from that... wow! that was really something! I can't imagine reading this as it was being released, there's no way I could've been okay having to wait for each chapter... I can't believe no one has commented on this since before its last update, how can they have missed it or thought not worthy of praise?!
xxxHOLIC
I love that you can see Watanuki maturing ever so slowly and naturally. I kind of liked that sort of suffering look he had in the latter chapters, it makes me forget how annoyed I was in the early episodes. I think I read somewhere that there was a sequel in the works, I'm quite excited to read it.
Itsuka Tenma no Kuro Usagi Koukouhen: Kurenai Gakkou no Seitokaishitsu
Not sure if this is ever gonna get finished, I found the whole thing just a bit confusing, also hard to feel attached to the characters.
A Boy Who Fishes Dreams
Definitely could be made into a longer series.
Kuro(tsu) Tenkousei