Kat, I think that Anansi Boys was my favorite of his books. I liked American Gods, but felt like there was a period in the middle half of the book that just went on a forage for a while that had nothing to do with the rest of the book. It may just have been me and it's been several years since I last read it. My favorites or Gaiman are in order, Anansi Boys, Stardust, Neverwhere and American Gods are tied for third. Christopher Moore is an author that I've been reading a good bit of lately. Fluke, Practical Demon Keeping, and The Island of the Sequined Love Nun are some of my top favorites. But my favorite is Lamb: the gospel according to Biff, Christ's childhood friend.