If it's done right, this should appeal to anyone who's ever punched 5318008 into their calculator and turned it upside-down.

In junior high, our computers had something like HyperCard on them (I think it was HyperStudio). Everyone loved it - the nerds, the jocks, everyone. They'd record themselves making silly noises and get that to play when you pushed a button, that sort of thing. Simple and juvenile, but everyone did it. Now these things are so polished and all development is so obscure to most people that we've come to accept them as things that other people program for us. If this takes off, and is pushed in schools, it could really democratise our gadget culture.
I don't have a cell phone right now. I bought my wife an iPhone a little over a year ago and she loves it. I like it too, and I like the look and feel of the iPad, but I just don't have the time or prerequisite knowledge to get into development for hobbyist purposes. This is just one more point in Android's favor if and when I do pick up a cell phone.