I was at home (in Brookline, Massachusetts, which did not lose power) on the computer when the phone rang at 4:33 PM. It was my younger brother, Josh, in New York City, calling to ask me if I knew what was going on. As I had left the TV news on in the living room, and the TiVo was recording its buffer, I was able to start describing the news to him and I learned of the blackout as I told him what was going on.
I served as the point person for my younger brother, my sister-in-law, and my mother for the next few hours. Josh had to sleep overnight in Manhattan. Rachel had to care for their new baby daughter, and I gave her information on New York City emergency lines and hospitals. And Mom stayed home.
I recorded NBC Nightly News that evening and the Today show the next day, and a few months later I gave the VHS tape to Josh so he could see what he missed.
As I mentioned above, Massachusetts (and pretty much most of New England) didn't lose power. After one of the major blackouts a few decades before, the people in charge in New England had decided to set up a series of switches that could be opened should there be a power surge that might lead to a shutdown. Thanks to their foresight, I was able to help out my family as I described.