There’s no way you’re going to watch this since it’s almost an hour long, but two years ago Randall Munroe, author of the great xkcd, gave a talk at Google. Covered topics included the correct blood-alcohol level for effective programming, velociraptor attack survival tactics, and how not to treat women on the internet.

But the best part is at 21:30, when the legendary master Donald Knuth asks a question. Munroe handles it like a pro. If I ever gave a talk and Knuth showed up, I’d die fourteen kinds of dead.