I can’t believe I had a chance to experience my FIRST EVER EARTHQUAKE… and I missed it!
Apparently the shaking was so slight here in central PA that anyone outside walking around couldn’t feel it, but normally on a Tuesday afternoon I would be sitting at a desk on the fifth floor of a building full of geologists and would TOTALLY have felt it (my labmate did!) plus gotten to share in the excitement. But alas, I picked Tuesday of all days to play hooky in the afternoon and go for a long trail run with my friend Christy in preparation for the Dam Half next month. We were in the car when it happened and didn’t feel a thing. The weather was perfect for running in the woods so I guess it was a good choice, but maybe missing the earthquake was karma for skipping school 
For my non-geologist friends and family, the USGS pages on the earthquake (which they have for every significant quake) are interesting if you’re looking for a source of scientific info. I think their crowd-sourced “Did you feel it?” feature is especially interesting for this one, since a gajillion* people reported it both because it occurred in a region with a relatively dense population and good Internet access, and because it really was felt across a much wider area than comparable quakes out West; the old, cold, minimally fractured crust east of the Rockies transmits shaking much more effectively than younger, deformed crust to the west.
*rough estimate
Edit: IRIS also has some neat summary info about the quake on their website (scroll down a bit) which would be helpful if you’re teaching about it!
Yet another edit: I know everyone else except geologists is probably over the earthquake/has moved on to talking about Irene, but I just found two more awesome sources: this blog post is really interesting and thorough, and (I think this one is even more awesome because I’m a huge map geek) this really sweet map that overlays the epicenter, local bedrock geology & faults onto Google Maps. Definitely worth checking out.
In Maryland, I was sitting at my computer when the whole room started shaking. It felt like wobbly shaking–different than shaking caused by heavy footsteps. It took a minute to realize it was an earthquake. The kids and I gathered in the front hallway of my house–the chandeliers were swinging and I wondered if I should go get the baby out of his crib near a bookshelf. I was scared that the earthquake would get worse and the house really might fall apart. Then it stopped, and the only proof that it happened was the clanking of some decorative spoons in the kitchen and pictures crooked on the walls. Sorry you missed it–in our area people outdoors saw the ground rolling. But people driving in cars didn’t all notice it.
That’s so crazy!! Glad everything was okay at your house, thanks for sharing!