Talk about Internet survivalists! We lost power, got it back, then lost DSL. I had the droid up and running a new internet connection in about 2 min, since I'd already installed PDA net. Then when the power came back on but the 'net didn't, I used Windows connection sharing feature to sort revese connect via wi-fi to my wi-fi router.
So we had five of us, my wife, my daughter and three of her visiting buddies, running off one droid. Tres cool.
BTW, highly recommended for the electronically connected/addicted:
Xantrex Technology Inc. - Boat, Truck, & RV - XPower Powerpack 600HD - Product Information. Comes in different sizes.