My family did it, I was over at my boyfriend hosue and they did it too.
It was actually really awesome.
We lit tons ofcandles, and for an hour we all sat there and played charades.
Then my BF & I went for a walk around the neighbourhood to see how many people had their lights off--just about everyone did.
Even my work, which is a big movie theatre company, participated. Obviously they can't turn all their power off, but they dimmed all the lights.
It was really well promoted around here and everyone I've talked to did it.
Verrry cool. I actually really enjoyed myself.