Water, water - where?

I subscribe to a Wired magazine RSS news feed, and some really amazing stuff comes up on that. Since we've abandoned cable, I don't get to watch the Daily show or Colbert Report any more, but check out Dean Kamen as he presents a water purifier on the Colbert Report. How great is it that this guy actually spends his time, and his employees' time, inventing stuff that will actually help people?