We aren't unschooling but I have always been fascinated by the concept. I just don't know how it would work in real life. There are some things I am not sure a kid could lean without someone at least introducing the subject and I think with unschooling even that is not done? Anyway, I am all for exploring interest. DD just watched Dolphin Tale last night and has spent the whole day on their website, looking up dolphins, and reading books about them. She is watching the movie again right now. So I pulled out a science workbook we have that has a section on dolphin adaptations (we have been studying adaptations recently) and we skipped ahead and looked at that. Anyway, just my 2 cents. I could see unschooling in some subjects (reading...we definitely do). I could see unschooling science for a kid like mine who is enthralled in all things science and will sit down and study spooky particles in quantum physics for hours, but math is one place I have a hard time envisioning it.
