Freakonomics
It's very non-PC; he claims that abortion has lowered the crime rate. But he also analyzes discrimination on The Weakest Link. Remember, that show with the uppity British Lady who said, "John, you are ... ... ... ... TheWeakestLink!!!" Maybe that's not very PC either, but it's a good read. Read the book.
Who am I kidding; you won't read it. (Sorry, Dave, but I haven't watched Primer yet.) Instead, read this long article that got it all started. It was published in 2003, and the response was good enough that they expanded it into a book.