Comment Parallax Basic Stamp (Score 3, Interesting) 886
Check out the Basic Stamp from Parallax. There are kits that use it to teach logic, programming, electricity/electronics, etc. Price is good (radio shack has the whole kit for $79 bucks - it's called the "What's a microcontroller" and it comes with everything you need to do a bunch of nifty experiments).
User forum support is pretty good too: http://www.parallax.com/
Dan