Also saw a video about Edsger Dijkstra. It's mostly nontechnical, discussing his early experience in computer work in the Netherlands (he had to write machine code for a nonexistent machine, and hope it worked by the time it was built), how he met his wife, his collection of handwritten technical papers, why he moved to Texas. It also features several anecdotes about his experience with software quality over the years. (Example: shortly after the first successful moon landing, he spoke to the head of the developer for the module software: "How did you produce so many lines of perfect code?" "Huh? We had a bug a few days before launch, it accidentally calculated the moon as repelling rather than attracting." "Wow! Those guys were lucky to make it alive, then!" "Yes, lucky...")
Also, Gary King sent me a link to his Lisp blog. I haven't added it to Planet Lisp yet. The content is excellent, but the RSS feed doesn't actually include much of the content; as soon as that's fixed, expect to see it aggregated.