The God Who Weeps: How Mormonism Makes Sense of Life by Terryl and Fiona Givens is the last book I read.
This book manages to explore the basic principals of LDS theology in a way that is both deeply rational and deeply spiritual. The basic goal of the work is to demonstrate that Mormonism is rational. I feel that the authors achieved what they set out to achieve, not only in style, but with a humility and charity which is so frequently lacking in discussions of a religious nature. I cannot recommend this book enough.