Via Teresa Nielsen Hayden, check out this compare-and-contrast of the area affect by last week's blackout, versus what that same area usually looks like. NYT registration required.
(Why is it that every time I read a story about the possible causes of the blackout, I picture that guy in Airplane! who unplugs the landing lights as the plane makes its final approach and then says, "Just kidding!" as he plugs them back in? Anyway, that single blip of bright light in the Buffalo area is not me standing outside shining a deer-spotlight into space whilst doing the Nelson Muntz "Ha, ha!" So don't ask.)