Ta-da: the first LEED certified home. Tom Kelly, who is interestingly enough a developer, built this house with all kinds of energy-saving features. It's a 2,000 sqft, "'net-zero energy use' home, meaning over the course of a year, its photovoltaic panels will track the sun and are projected to generate more electricity than the home will consume." I personally like the fact that there is no "lawn," per se, just rocks and shrubs. Treehugger had this picture:

Which is weird, because it's not at all of this house. But when I saw it, I got all excited, because it looked very Laura Ingalls Wilder.

(read about at Earth Advantage)