The Computer History Museum archives strike again!
They cover Steve Capps' Alice, the Melting Clock, and the man himself.
Lots about MacPaint development, HyperCard, system software, the obscene message that Steve Capps left in the Lisa Print Manager (1h00m38s) that surprised his manager, and lots of other previously undocumented tidbits.
Filmed around the time the MacPaint source code was donated to the museum.
Thanks, Computer History Museum!