Jesse Schell's talk about the future of game design as it invades the real world is just astounding. If you do experience design of any kind it'll be the most valuable (and entertaining) 20 minutes you'll spend all week.
A week removed from the ninth anniversary of 9/11, after all the sound and fury has temporarily subsided, we can look back and know that we have just witnessed the realization of historian Daniel J. Boorstin's most renowned prophecy.