That's what I'm currently reading, Philip K Dick's Flow My Tears, The Policeman Said (c) 1974, that'll be just about the time Dick had his Valis moment, his epiphany. The story appears to be the usual (as he called it in his "I am alive and you are dead" biography, his mechanical prose) style and format. Man loses identity and finds insane girl to get trapped in an elevator with. Would make a great stage play.
Update: here's my review of Flow My Tears - http://www.zone-sf.com/wordworks/fmttpspkd.html.