Way back when I worked at HP in the Software Development Technology Lab, we invited a series of speakers to talk about their view of technology.

We had folks such as Jef Raskin, Ted Nelson, Douglas Englebart, James Burke. All quite fascinating & inspiring people.

Jef brought a Cannon Cat and discussed his views on User Interfaces & more. The MPE OS engineering guys were rather sarcastic in hearing his methodology around the OS approach of the CAT.