https://www.youtube.com/watch?v=-V_OPfmbbCk
https://www.youtube.com/watch?v=fTO-Ruby-Uo
https://www.youtube.com/watch?v=CJlRGe5QGhs
Also thanks to Lars Brinkhoff's research: Here's a video uploaded by Cynthia Solomon. Seems legit.
https://www.youtube.com/watch?v=c4kMzrDr4jQ
Definitely check out the rest of Cynthia Solomon's youtube video treasure trove, with lots of great stuff by Marvin and Margaret Minsky, Seymour Papert, and others from MIT and Atari Cambridge Research:
https://www.youtube.com/user/cynthiaso/videos
Seymour Papert on Logo, Turtles and Giraffes:
https://www.youtube.com/watch?v=maDzjHIiXZc
https://www.youtube.com/watch?v=lDyym_9-E-g
https://www.youtube.com/watch?v=ha8sTgtUejM
A gestural programming system developed by Margaret Minsky, Danny Hillis, Daniel Huttenlocher, David Wallace (Gumby), and Radia Perlman at the MIT-AI Lab:
https://www.youtube.com/watch?v=-Wq6SQTVM9M
Marvin Minsky demonstrating a Logo Machine with an acoustic modem and cassette tape, talking about education theory, and showing a part of his first "thinking" machine: a simulated nerve synapse (1 of 40) with an adjustable knob that he built in 1951 out of WW-II surplus hardware, and discussing playing with Tinker Toys as a child:
https://www.youtube.com/watch?v=c4kMzrDr4jQ
https://www.youtube.com/watch?v=S72xF3gd-mI
https://www.youtube.com/watch?v=yZRQQl8mA0c
https://www.youtube.com/watch?v=dfKRNHRyD64
David Levitt demonstrating his musical improvisation software: