Over at Crosstalk Radio, Ingrid Schlueter interviewed Pastor Bob DeWaay on her radio talk show done on April 6th here on the issue of Piper's invitation of Warren to DG2010 conference. As described:
Ingrid reported that Pastor John Piper encountered “Purpose-Driven” Pastor Rick Warren at a funeral and their meeting resulted in a phone call. The result is that last week Pastor Piper sent shock waves through the Christian community after announcing that he was inviting Rick Warren to be one of the speakers at the 2010 Desiring God Conference.
As Pastor DeWaay explains, "Orthodoxy" has to do with what you believe and what you’re willing to say you believe, at least in private. "Orthopraxy", on the other hand, has to do with what you actually practice. As this program proves, Rick Warren, while he may have affirmed orthodox principles to John Piper, has a public record of proclaiming something very different. Ingrid and Pastor DeWaay expose this tension through various sources such as Warren’s own peace plan, an audio clip by John MacArthur on Warren’s omission of repentance, and much more.
In another talk show Iron Sharpens Iron here, Phil R. Johnson, president of Grace to You and the Pyromaniac, did an interview on the Piper-Warren controversy, seeking to give a balanced response.