Thanks to Boing Boing for this one:
AirPower Wiki has up-to-date info on where to plug in your laptop at various airports.
If you don't have access to a lounge (I use AA's Ambassador) or there just isn't one (like at Bradley, which I use regularly), it's great to know where you can get power.
Begs the question - why is WiFi so much easier to deal with than simple electricity?

Link