I like the dark anime and watch anime unleashed on Tech TV on the weekends - its the only show that I have my PVR tape regularly.
My favorite is
Soul Taker (link goes to disk 1) and I just ordered the full 4 DVD set. Its very dark and the imagery is very esoteric.
I recently rented Spirited Away and loved it.
Just visited the sites for Wonderful Days and Narutu and they both look great too!