AirPower Wiki
Thanks to Teressa for pointing me at the AirPower Wiki, which attempts to document the various airports and the places in them where you can find a usable AC recepticle. It seems a bit sparse at the moment, but I imagine once the true road warriors out there find out about it, they’ll start filling it out.
I’m actually surprised that someone hasn’t begun selling access to power outlets in airports. They (over)charge us for just about everything else, why not?