Although mostly known for his novels, Philip K. Dick also had a pretty impressive pile of short stories. This collection contains 15 of them: The Preserving Machine, War Game, Upon the Dull Earth, Roog, War Veteran, Top Stand-By Job, Beyond Lies the Wub, We Can Remember It For You Wholesale, Captive Market, If There Were No Benny Cemoli, Retreat Syndrome, The Crawlers, Oh To Be a Blobel!, What the Dead Men Say, and Pay for the Printer.
For those of you who don't know, the story "We Can Remember It For You Wholesale" is the story that the movie Total Recall is based on. Personally, I think it is much better than the story the book is named after. But another very interesting story in here is the possibly prophetic "What the Dead Men Say". It is an eerie mix of Ubik and VALIS. A cryogenically frozen man is believed to be sending messages from space, tying up all forms of communication. That particular story was written in 1964, several years before PKD's strange experiences with forces beyond earth.
There are at least five other stories in here that I particularly enjoyed. Needless to say, every PKD fan owes it to themselves to read this collection at least once.