I found the book very readable and full of well presented information. I particularly liked the chapter on whether the resurrection was really necessary. For me, the most telling evidence was the character of the disciples. These were fishermen and laborers. They worked with their hands and had a concrete reality. Miller argues that a spiritual resurrection wouldn't have been sufficient to turn these frightened men into ardent preachers who willingly faced death to bring the gospel to as many people as possible.
I highly recommend this book. Whether you agree with the author or not, he presents a wealth of evidence and cites other authors to allow you to understand his arguments and decide for yourself. I thoroughly enjoyed the book. If I wasn't already a believer, it would have convinced me.
I reviewed this book for Crossway.