Yeah, I know that some (many?) of you aren't Calvinists. And you probably know that I am, but that's not the point. The point is we all need to read on theological topics of importance regardless of our personal positions. Often those well-written books persuade us. So...
What are your Big 5 books on Calvinism?
Actually, be a little more free with the topic if you like. List a book on Calvinism, Arminianism, both, the sovereignty of God, or even a particular topic like predestination, election, etc. Go!