When I first saw the 'Flow' kitchen by John Arndt, I thought it looked like a crazy science project. Now that I've actually read about it...well, it's kind of true.
The recent Eindhoven graduate created a complete kitchen unit based on the simple principle of symbiosis. Water dripping from your dishes feeds the plants below and helps keep your counter top containers cool. Waste is immediately composted in it's own little holder, creating...you guessed it...fresh soil for your herbs.
While at first I wasn't too excited by the aesthetics of the system, now that I've seen how much thought went into the design, I think it looks pretty darn good.