"Fresh Wind Fresh Fire: What Happens When God's Spirit Invades the Hearts of His People"
Author: Jim Cymbala   Publisher:Zondervan
This is the personal account of how God took a man and his wife, placed them in a dying church in Brooklyn, New York and transformed the people and the church through the power of prayer and the Holy Spirit's leading.  I rarely read a book more than once.  I have read this book at least three times.  It is a tremendous reminder of the power of God accessed through prayer.  The pages are full of the real life stories of lives that were drastically changed by God.  It would be hard to walk away from this book unchallenged or unmotivated.
Other books by the author:
"Fresh Faith: What Happens When Real Faith Ignites God's People"
"Fresh Power: Experiencing the Vast Resources of the Spirit of God"