Just had a small earthquake. The house shook a little, and it probably lasted about 30 seconds or so; but nothing fell over.
Update: Not so small: 5.6, centered about– oh heck, here it is on Google Earth:
Update 2: It was on the Calaveras fault, as you can see by superimposing the KML file that the USGS just generated, and a KMZ file from the USGS showing the locations of Bay Area fault lines.
I love Google Earth.