4.
The Three Stigmata of Palmer Eldritch by Phillip K. Dick (Fiction)
The dense, confusing but wonderful story of a futuristic world where off world colonists entertain themselves by combining hallucinogenic drugs and robotic sex toys to enter strange new realities! Apparently, John Lennon and Yoko Ono were planning on making this into a movie right before John was killed!
Any reason you made the title more bold than the others apart from the fact that it's a fucking fantastic book? I can't imagine a film version of it...especially if John and Yoko were going to do more than just throw some cash at it.