In 1987 Apple Computer held a competition called Project 2000. Apple asked student research teams to submit papers detailing what the computing technology of the year 2000 would look like. In early 1988 Steve Wozniak, Alvin Toffler and Ray Bradbury, among others, sat on the judge's panel. The winning team was from the University of Illinois with their paper called Tablet: The Personal Computer of the Year 2000. Below is an excerpt and various images from the paper. You can read the paper in its entirety here.
Our machine will have the same dimensions as a standard notebook. It will look like an 8"x11" monolith from the movie 2001, and be reminiscent of the Dynabook. This rectangular slab will weigh but a few pounds, and have no buttons or knobs to play with. The front surface will be a touch-sensitive display screen and will blink to life upon touching two corners.
There is supposedly a 12-minute video called "Project 2000" floating around. I have yet to see it but would love to see if it's in the same vein as Apple's Knowledge Navigator from 1987.