This is the March 31, 2010 debate between two prominent New Testament scholars: Dr. Dr. Craig Evans and Dr. Bart Ehrman (specific debate info and bios here) on the topic: Does the New Testament Misquote Jesus? The format revolves around 7 critical questions on the topic, with each participant providing their prepared answers. Wintery Knight has his overview of the debate here. Video can be found here.
Full Debate MP3 Audio here. (90 minutes)
More Bart Ehrman debates and responses here.