When I was a graduate student at UCLA, I signed up for a CS course that turned out to secretly be "the Alan Kay show." He showed up every week and lectured about computer science history. Didn't learn much about programming language design that semester (what the course ostensibly was) but it was one of my most formative experiences.
Sadly, no. I think he used to do it every couple of years (the course was never listed with him as the faculty member to avoid over-enrollment) but I might have been in one of the last classes he did. As far as I know, he hasn't done it since the pandemic started.
