For those of us on the wrong side of the earth for todays lunar eclipse, NASA’s JPL offers the next best thing. A solar system simulator. You’ll have to monkey with the settings. I’d recommend using the extra brightness if you view the earth from the moon for a Terran eclipse. The view from the moon is visually more interesting, I think. This simulator is a very useful tool for exploring the solar system. Enjoy!
Tom, founder and drive system engineer, at the LTO 18″ telescope. [Photo from starkids.org]
One of the coolest things I have ever witnessed happened during a lunar eclipse a few years ago. We had the observatory open during the event with the 18″ Cassegrain pointed at the moons limb. As you watched a star along the edge of the moon, you could see the moon moving against the background of stars, eventually occulting the star in the period of a few minutes. Of course, you don’t have to wait for an eclipse to do this, but there it was that night, the celestial clockwork in motion before your eyes.
[Thanks to Les for the JPL link!]
Lamentations on Chemistry 
It’s great that JPL has a solar system simulator, but you can get one and run it on your own computer here:
http://www.shatters.net/celestia/
A screen shot here:
And a short note about it and a couple of other astronomy apps here:
Hey, thanks for the link.