Ubik: The Screenplay by Philip K. Dick
Every bit as reality-bending and surreal as the novel by the same name, but tighter, quicker, and more biting than the original. I wouldn't have thought it possible to improve on the remarkable novel, but Dick does it with seeming ease. The degraded reality of Joe Chip and Glen Runciter is wonderfully (and terrifyingly) enhanced by the added visual aspect of the screenplay. And Dick's copious marginal notes (including musical suggestions) enable a deeper experience with the story.