Yesterday (1st October 2013), I was interviewed live by a radio station about the book "Engaging with Keller". While I think my answers could have been better, I was impressed with the interviewer Kevin Boling.
The website link is: http://www.sermonaudio.com/sermoninfo.asp?SID=10113125283
I hope that you find this helpful because the interviewer had really done his research and he brought out a range of very valuable points.
Teach me, O LORD, the way of your statutes; and I will keep it to the end, Psalm 119:33.