+1 for Ubik. It's really the quintessential example of his reality bending core theme. Everytime you think you've got a handle on what's happening, he pulls the

+1 for Ubik. It's really the quintessential example of his reality bending core theme. Everytime you think you've got a handle on what's happening, he pulls the rug out from under you, all the way to the end. Some of his other books try to do the same thing, but tie things up too nicely (like Flow My Tears, the Policeman Said).