I thought I'd just give a new post in answer to mwh's question/comment to the previous post.
"Do you have a short, hotlist of instructional and (in)formative books that all ministers (broadly speaking) should have read? 5-10 books? Books that should form the backbone or framework of our thinking and ministry?"
I'll try to do it in ten!
Assuming a Bible and some kind of word study tool(s), I would say the following ten would be high priority.
1. The Hermeneutical Spiral, Grant Osborne (or a similar introductory text-book to hermeneutics, such as Fee and Stuart's How to Read the Bible for All Its Worth)
2. New Bible Dictionary (or a similar one volume Bible dictionary, or multi-volume series of Bible encyclopedias; I personally prefer the IVP series that includes: Dictionary of Jesus and the Gospels, Dictionary of Paul and His Letters, etc., but much of that kind of material would be available in this volume in more condensed form)
3. New Bible Commentary (or a similar one volume Bible commentary - although this is the best one I know of)
4. Christ-centered Preaching, Bryan Chapell (I think this is the best book on homiletics available)
5. According to Plan, Graeme Goldworthy (for an introduction to biblical theology)
6. Systematic Theology, Wayne Grudem (or another solid evangelical Systematic Theology, such as Millard Erickson, Robert Culver, or Robert Reymond)
7. Instruments in the Redeemer's Hands, Paul David Tripp (the best overview of the dynamics of biblical counseling that I've read)
8. The Deliberate Church, Mark Dever (a great one-stop source of practical instruction on various elements of church-life, including worship, preaching, and leadership)
9. The Christian Minister, Charles Bridges (or another well-rounded book on the ministry - others that would compete are The Reformed Pastor, Richard Baxter or Lectures to My Students, C. H. Spurgeon)
10. The Works of Jonathan Edwards (the 2-volumes published by Banner of Truth; one could hardly get more for the money, as these volumes include biography, history, sermons, and Edwards' best theological works - every preacher needs something like this to feed his soul. Another possibility would be The Works of John Owen, but they fill up 16 volumes!)
I'm aware that this leaves out a lot - apologetics, Old and New Testament introduction, more thorough treatments of various aspects of theology, etc. But if I could only have ten, I'd want a list that looked something like this.