I would also alert you to the recent and quite stimulating series of posts by Gerald Hiestand on the "Taxonomy of the Pastor-Theologian" over at SAET (The Society for the Advancement of Ecclesial Theology) website. I'll give my two cents on the subject in a future post.
Addendum: I was remiss not to include the lecture sponsored by the Carl Henry Center this past spring: “The Pastor as Scholar, and the Scholar as Pastor: Reflections on Life and Ministry with John Piper and D.A. Carson”. John Piper's lecture in the form of an autobiography made a deep impression.