The talk is from CUSEC, probably this one: http://vimeo.com/2723800

As for his "attitude", I've actually met him and talked to him face-to-face. His internet persona is a put-on and he only talks like that to piss people off. In actuality, he's a really nice guy who is super-smart and who does not take shit from people. It's actually too bad that there aren't more of him in our industry. Scope creeps, memory leaks, etc. would be a thing of the past.