DesignBoom just announced the winners of their Green Life design contest. Tricia flagged this one (also the 1st place winner) as post worthy. The Murukami concept chair by Rochus Jacob uses the rocking motion to generate power for the attached OLED reading light. Cool idea. I wonder how well it works, but the prototype sure is nicely done.
Images from DesignBoom. Thanks to Tricia for the tip.