I'm in the process of reading every Philip K. Dick novel ever published.
So far I've read 'Eye in the Sky' Very interesting concept. I don't want to ruin it. 'Do Androids Dream of Electric Sheep?' Obviously the most prominent influence of Blade Runner. Not as good as the movie. (Never thought those words would seep from my lips... er fingers. 'Flow my Tears, The Policeman Said' A wild ride. Very entertaining and thought provoking. 'A Scanner Darkly' Phil was surrounded by this subject matter in his life and the emotion is very raw even through the science fiction filter.
I'm currently reading 'The Man in the High Castle' as well as the unrelated 'Game of Thrones'.