Five Books That Have Influenced Me

Just for fun...  Here are the five ministry books that have had the most influence on me (in no particular order)...

The Holiness of God - R.C. Sproul
Mere Christianity - C.S. Lewis
Evangelism and the Sovereignty of God - J.I. Packer
The Present Future - Reggie McNeal
Leading on Empty - Wayne Cordeiro

There are lots of other honorable mentions, but if pressed, these are the five I would choose.  I am interested to hear from the rest of you...  What five would you choose?