Celestia is a free and open source space simulator that allows you to explore space right from your computer. Celestia is available for download on Windows, Mac OS X, and even Linux. Celestia has many very cool features, including an eclipse finder.
Not only does the eclipse finder allow you to find solar and lunar eclipses on Earth, but you can seek eclipses on other planets as well. I found out something really cool when checking out eclipses on Jupiter - because Jupiter is very large and has many moons, solar eclipses are very common.
Sky Calls is a NASA-supported astronomy alert service that puts kids in touch with the sky-night and day. Anyone with a telephone can participate. When there is an eclipse, an alignment of planets, a big solar flare, or a flyby of the International Space Station, the phone rings. A voice message from NASA alerts students to the event and tells them how they can see or experience it. Students with cell phones can choose to receive text messages instead of voice. Of course, teachers can participate, too.