Earthquake
Norwich just had an earthquake. As soon as I felt it, I poked my head out the door and found Tom and Remy doing the same. There was a chorus of "sweet!" and related terms, and we went back inside. I estimate between three and four on the Richter scale (3.6, to be precise). My night is over, really. There's not much that can top an earthquake.
That makes three or four I've felt that I can bring to mind at the moment. The biggest, of course, was the one in Portland when I was in late elementary school. The most ironic was in 9th grade when someone walked into the classroom and shouted "earthquake!" and then it happened halfway through that class.
This makes me happy.