Friday - Robert A. Heinlein I read this in high school (the cover really helps these star ratings). If I were to reread this today (which I have no desire to do), I would give it 2 stars, mostly for the ending (which reduces the eponymous Friday to a barefoot-and-pregnant housewife of one of the men who raped her in the first chapter).

Addendum (11/22/11):
Upon further reflection and in light of the comments below, I'm revising my rating to 2 stars: Get past chapter one and ignore the ending and what's in between is Heilein's bloviations, which you can revel in if you're a fan or argue with if you're not. (Like the observation of Friday's mentor that a society that's lost the idea of common courtesy is doomed.)