I've only read three of his short stories, but I really enjoyed them. Those I've read are:
Dark Winner
Dark Return (from Wilbanks anthology Damned Nation) and
Ceremony
What do you all think of his work? Does he write horror novels as well?
I found a third story of his in another anthology I own, It's titled Saturday's Shadow. I plan to read it soon.
Another guy who I recently read a story of, which was a tremendous tale (one that would crack my all time favorites) is Ian Watson. The story was Happy Hour, and if you haven't read it, I think it is well worth while to find it
(I have it in the anthology, The Mammoth Book of Haunted House Stories). Don't know much about him either, it sounds like he mostly writes Sci-Fi.