H2O.com really needs no pitch.  It just might be the most valuable domain name on the planet and definitely is the most valued and cherised resource on the planet.  We're all made up of 60% water and the world's drinking water supply is diminishing drastically daily.  This rare rare offering is not just for H2O.com but it also includes H20.com as well.  Buyer to get H2O.com the proper with the letter O and H20.com the typo with the zero.  Possibilities are endless, think of a pure clear search engine, a water brand, a charity, a swimwear brand, I could go on and on and on!