One of my favorite movies of all time is Blade Runner, directed by Ridley Scott and starring Harrison Ford. It's an adaptation of the terrific book Do Androids Dream of Electric Sheep? by science fiction master Philip K. Dick. There have been other film versions of his tales (Minority Report, Total Recall, A Scanner Darkly, and some less memorable ones), but Blade Runner is still the best. It was a box-office dud when it was first released, but it's the kind of movie that just seems to get better with each viewing. It's now become a cult classic.
The Library of America has released a beautiful three-volume set of 13 of PKD's novels. Read my review of The Philip K. Dick Collectionhere.
Looking forward to seeing more of PKD's novels and short stories adapted for the screen.