A Scanner Darkly - Philip K. Dick Freakin' brilliant.

A difficult, devastating read that delivers a powerful punch to the gut, a blow that's only minimally softened by Philip K. Dick's black humor. A Scanner Darkly is deftly written, an incredible portrait of a gradual degeneration into drug-induced destruction, and one of those unsettling books that stay with a reader long after the back cover is closed.

Mother effin' genius. Go read it. Now.