This one sent me on a wikipedia adventure - highlights included: List of confidence tricks Lion man of the Hohlenstein StadelHypocorismDurgaThe Book of the City of LadiesYggdrasil (hey Hyperion!)Fictional spidersI like the mechanic that old gods (and the new suits for that matter) exist because people believe they exist, although it opens up the risk of 'anything goes' plot development, which is not my favorite. This was the first thing I read by Gaiman - I'll continue!