This is excellent. I'm not really all that psyched about android but this is a great way to bust out proof of concepts, prototype, and useful one off apps. As a programmer nothing sucks more than getting deep into development than stopping halfway through, wasting days and hours, because you realized that what you envisioned wasn't going to work anyway.

It's also a good way to teach the basics of programming and OOP, which frankly a lot of programmers still can't grasp. In 2010 no less!