AppleComputer's first GraphicalUserInterface machine, released in 1983 as the culmination of a project started in 1978 to make a GUI machine. SteveJobs worked on the project but was kicked out, only to join the AppleMacintosh project instead. The machine was a commercial failure, and in 1989, Apple buried about 2,700 unsold Lisas at a landfill in Utah.
See: http://fp3.antelecom.net/gcifu/applemuseum/lisa2.html, http://oldcomputers.net/lisa.html; http://www.digibarn.com/collections/movies/digibarn-tv/gui-movies/apple/ has video files of the GUI in action.
Lisa emulator: http://lisa.sunder.net/
At the time it was pure magik. I remember our school got one and we were able to program on it. It was so totally different from anything else.