I'm consistantly impressed by what I read at the blog 
Education Innovation, and I wholeheartedly recommend it to any teacher who thinks outside the box.  The post 
Education's Paper-and-Pencil Penitentiary: Life Behind The Walls, comparing teachers and students to prisoners (among other throughts) is a perfect example of the kind of thought-provoking articles you'll find. The whole idea is fascinating, if not frightening.  Think about it over the weekend.