Inventor of computer mouse dies

He really was something of a genius, one of the presentations he gave was for years referred to as ''the mother of all demos''

The conference attendees were awe-struck. In one presentation, Dr. Engelbart demonstrated the power and the potential of the computer in the information age.

http://www.nytimes.com/2013/07/04/technology/douglas-c-engelbart-inventor-of-the-computer-mouse-dies-at-88.html?pagewanted=all&_r=1&

So many cool things came out of PARC