The Mother of All Demos is a name given retrospectively to the late Douglas Engelbart. Way back on December 9, 1968, he gave a demonstration of experimental computer technologies that are now commonplace. Like the mouse!
The live demonstration featured the introduction of the computer mouse, video conferencing, teleconferencing, hypertext, word processing, hypermedia, object addressing and dynamic file linking, bootstrapping, and a collaborative real-time editor. And Steve Jobs was on 13 at the time this was made. It would be nice if someone made a version with modern graphics at the start.