Okay, let me answer this question: What more popular systematic theology books have I found especially useful recently as a pastor/preacher for insights and for communication?
Bruce Bickel and Stan Jantz, "Bruce & Stan’s Guide to God: A User-Friendly Approach" (Eugene, Or.: Harvest House Publishers, 1997). High school level, but strong on communication.
Rick Cornish, "5 Minute Theologian: Maximum Truth in Minimum Time" (Colorado Springs, Co.: NavPress, 2004). Excellent definitions and summaries.
Bruce Demarest and Keith J. Matthews, eds., "Dictionary of Everyday Theology and Culture" (Colorado Springs, Co.: Navpress, 2010). Very good at answering "so what?"
Mark Driscoll & Gerry Breshears, "Doctrine: What Christians Should Believe" (Wheaton, Il.: Crossway, 2010). Good Reformed presentation; weak on the Holy Spirit and end times.
Don Thorsen, "An Exploration of Christian Theology" (Peabody, Ma.: Hendrickson Publishers, 2008). Excellent non-Reformed presentation.