I liked most of the content, but I was oddly disappointed by Temple Grandin's talk. Luke and Julia both gave very good presentations of familiar notions; Pinker and Mitchell and Norvig taught me things I didn't already know. The second of the Thiel fellows' talks was particularly good (lovely passionate antideathism combined with lovely passionate science enthusiasm!), and Robin's talk was interesting and well-structured even for a reader of his blog (though I did need some of the clarifications that questioners afterwards solicited). I'm considering sending my dad a link to John Wilbanks's talk once everything is online since it is related to his work and it was interesting.