Foucault? In my mind he's a conservative. His early books (Discipline and Punish and Birth of the Clinic) are brilliant and cover the ground that anarchists like Murray Bookchin do, debunking them all the way. Clinic also explains why health care is never going to seem affordable because, even if Bill Gates could afford CABG surgery and you couldn't, he's got to get millions of people to get the surgery so that the techniques are developed enough that the survival odds are good.