quality literature: a short history of nearly everything
i was supposed to read this one over the summer for inservice credit at school. i bailed on the inservice thing as that seemed like too much work at the time, but i did finish reading the book. i enjoyed it quite a bit. it's basically the history of modern scientific thought and theory. you can find a more detailed synopsis HERE. it's fairly dry but if you're into history and/or science, you may enjoy it. i did.