We had a 5.6 magnitude earthquake here tonight... my first one in CA. Instead of just the rigid shaking I expected, the walls completely shifted and swayed back and forth... that was the freakiest part.

Luckily everything breakable on my shelves is stuck down with earthquake/museum putty, but a few framed LPs on the wall were victims. Oddly, since I hadn't locked my front door after bringing in groceries, it worked its way open also.

[Update]: According to the local news, it was the largest quake to hit the Calaveras fault since the 1984 Morgan Hill earthquake.