That assistant looks like Bill Nye :-) I wonder if anyone showed this video as prior art in the iPad patent discussion.

Perhaps one of the most salient things to learn from this is that people with a vision, and a will, work continually toward that vision even when progress seems non-existent. A solid idea of what you'd like something to look like, elucidated clearly, can help shape products for years until what you imagine can be made real. When I saw Alan Kay talk about the Dynabook at one of Xerox PARC's lecture series I felt that here was a guy who had basically committed to this vision, and was knocking down objections one by one.