I really like Neil Gaiman and American Gods,
other books he has written is
Stardust (now also as a movie)
Ananssi Boys (a bit lite a sequel to American Gods but still not, it is the smae theme in a way)
Neverwhere (not as good as the other I have listed but still worth reading if you like Gaiman)
Good Omens (the funniest by far, and that is to be expected when it is written with Terry Pratchett)
Mirrormask (Also as movie, and the book is more illustration than writings, could have been made after the movie)
Some other that is pretty illustrated too, a few shortstories collections (some of the short stories is really funny), the comic book/series The Sandman, The script (or part of it, i suspect it has been rewritten Neil wrote it pretty long time ago) to Bewoulf. That is those that I have come in contact with. I can understand that some doesnt't like his writing style, it is a bit dark and allways a bit "magic" in the books.
And by the way, I cant really see that Good omens is similar to Jonathan Strange & M. Norell in any way other that there is some magic and that is in england. But both is still great books
