American Gods by Neil Gaiman
Ex-con Shadow meets the enigmatic Mr. Wednesday and embarks on a road trip across America, trying to recruit the old gods, who were brought to America by countless waves of immigrants, into the coming battle with the new American gods of the media, technology, wealth and fame. It does not go well.
A gripping, page-turner of a novel. Gaiman creates some wonderful characters to personify the various deities and spirits we encounter on the trip, and hours of fun can be had trying to guess the identities of the various gods.
Well worth your time. Highly recommended.