1. God's Lesser Glory by Bruce Ware - This is by far the best book on the debate that I have read.
2. God's Greater Glory by Bruce Ware - Although this book is not directly about Open Theism, it is helpful in presenting the Biblical teaching on the greatness of God in relation to His sovereignty.
3. Beyond the Bounds by Piper, Taylor, and Helseth - This is a compilation of articles dealing with the problems of Open Theism.
4. No Other God by John Frame - I haven't actually read this one, but have heard it is good.
5. Their God is Too Small by Bruce Ware - This is a popular version of his other book, God's Lesser Glory. It is basically a summary.
Any others you have read or heard of?