Have listened to a number of podcasts, but hadn't yet heard any of Dr. Craig Harper's... remedying that now.
And no making fun of his southern accent here (heck, I'm a native South Carolinian now living in North Florida which is more like South Georgia than the rest of Florida) but would almost bet money on Dr. Harper being born relatively close to the Mount Airy, North Carolina area.
And only one reason I say that... he sounds almost EXACTLY like Andy Griffith who was born and raised in Mount Airy.