Games like World of Warcraft give players the means to save worlds, and incentive to learn the habits of heroes. What if we could harness this gamer power to solve real-world problems? Jane McGonigal says we can, and explains how in this 20 minute TED talk given earlier this year. We thought it was worth repeating because we think that there is room to be both educational and informative in the games we create. As the medium matures and spreads to every handheld device in the world the hope and optimism Jane envisions in this talk should give us some inspiration.