Andrea, I listened to that program. I thought it was really interesting. I went to the guy's website too and he has some interesting ideas on there. I guess it's hard for me to let go of the "curriculum" idea completely (hence, I am a homeschooler not an unschooler) but I see a lot of value in the child-directed learning model. I guess I try to do that to some extent, by focusing more on what the kids seem intrigued by as we go along. But I also think that the kids might not KNOW what they like until I introduce it to them.
It reminded me of the "non-compulsory education" bill someone is trying to pass. It will never get passed, of course---the education system is too engrained in all of us, and we can all imagine the horror stories of neglectful parents etc---but I think it's kind of logical, actually, that without the full weight of The State behind our current education model, more people would be brave enough to explore other options.