I got home from work at about 3:00 am this morning. I did some minor things around the house, got a snack, turned on a movie and went to bed.
I was still awake at 4:37 am when the house started a strange quivering. It was like the wind from a strong thunderstorm, only continuous. I would guess it lasted from 30 seconds to one minute. It was an earthquake centered in Illinois that I felt all the way in southcentral Kentucky.
You can see a REALLY fantastic seismic recording of the earthquake on this page, for at least a while. See if you can spot the earthquake:

It was disconcerting to say the least.