Time's Arrow by Martin Amis

This innovative novel is written backwards--meaning the characters grow younger instead of older (and not quite like Benjamin Button since everyone ages in this way), walk backwards, regurgitate their food and reform it into whole pieces on the plate, etc. While this might on the surface sound like a gimmick, I assure you there is an artistic reason for this device, inherent to the telling of the story, and it is a very good one.