Yoshiki Ohshima has put together quite a collection of videos relating to early work on computers in education, computer interfaces, new thinking in ways to use computers.
Please feel free to post any here which particularly appeal to you!
(Some of these are quite raw transfers from distressed video tape, but still I think worthwhile.)
I’ll kick off with a couple:
via the JOSS video posted in the recent Vintage computer ads … thread.
(perhaps see also Points of View - a tribute to Alan Kay on his 70th birthday)