This evening, between 5:30 and 6:30 PM EST, folks on the east coast of the US (and I think most of Europe and Africa) should be able to witness the beginning of Earth's shadow hitting the Moon. By about 8 PM, the Moon will be completely covered.
If you've got a camera handy and some high-speed film or a tripod, snap off a few shots.
Lunar eclipses can be quite beautiful. If you haven't seen one before, do yourself a favor and step out to take a look tonight. Earth's red shadow plastered across a fairly bright full moon (for a nice primer on Lunar eclipses, including the answer to the question 'why is it red?' check out this nice guide) can be a striking sight and one that, unfortunately, I'm going to mostly miss again because of my geography.
(ed. I just realized that I forgot to change my Thursday eclipse heads-up post from "draft" to "publish". It's up now. Sorry for such a late notice on what should be a beautiful event. I've got my fingers crossed for those of you on the east coast, hoping that skies stay clear.)