Supernova conference organizer Kevin Werbach is part of President Change's FCC transition team. I've hung out with the guy, and I never would've guessed he belongs to not one, but two guilds in World of Warcraft. Here's his take on WoW's benefits to grownups:
What the game does is provide an incentive for people to develop new software and ideas for collaborative production. Many of those ideas will translate to other group activities, including those within the business world. I think [massively multiplayer online games] will be, at a minimum, a significant testbed for these new technologies, because users see a direct benefit and are willing to experiment with new things.