Hah. My late night is justified after all. Had I actually gone to bed at a sensible hour, I probably wouldn't have experienced the excitment of a monitor-jiggling earthquake. Probably only around 3 on the
Richter Scale, but far more fun than anything you get from one of those earthquake simulators (e.g. the one at the
Natural History Museum). It certainly had an entertaining effect on my
Galileo thermometer.