My gateway to Neil Gaiman was "Good Omens" co-authored by Terry Pratchet. It is to this day one of my favorite books, and I re-read it at least once a year. I've also read Stardust, American Gods, and Neverwhere. His books are an exercise for the brain. I think you would have been impressed by how much I geeked out when I read Neil Gaiman's forward in "Just A Geek" to realize that you, Wil Wheaton, as one of my new favorite authors, also love one of my continuing favorite authors.