I listened to this on audio, and it was fantastic.
The gist of this book is that when folks immigrated to the US, they brought their gods along with them. Then, as these immigrants assimilated into the American culture, their gods were abandoned. These gods, finding themselves unemployed, had to find jobs.
It's a great book, especially for those of us who worship no gods. It made me think, and it made me laugh. I really felt for Shadow, the protagonist of the story.
In many ways, this made me think of a Ingmar Bergman's writings. It'd make an awesome movie.