Bart Ehrman and Richard Carrier
With those two names in the subject line, I'm bound to get a huge boost in readers in a short amount of time. I don't have much to say that hasn't already been said, though, so I'm just going to post links to the back and forth. This is mostly for my own benefit so I don't have to go hunting around later if I want to read it all again.
Did Jesus Exist? by Bart Ehrman
"Ehrman on Jesus: A Failure of Facts and Logic" by Richard Carrier (I'm going to include a link to page 16 so I don't have to click through 16 pages to get to the comment section. Yeah, I know there's a link directly to the comment section on each page, but the link isn't working for me.)
"Acharya S, Richard Carrier, and a Cocky Peter (Or: 'A Cock and Bull Story')" by Bart Ehrman
"Fuller Reply to Richard Carrier" by Bart Ehrman
"Ehrman's Dubious Replies (Round One)" by Richard Carrier
There are also some other blogs responding to each of them.
In response to Bart Ehrman
"The historicity of Jesus: Bart Ehrman responds to Richard Carrier (sort of)" by Jerry Coyne
"The Bible Geek" by Robert M. Price. <--this is a podcast.
In response to Richard Carrier
"A Look at Richard Carrier's Critique of Bart Ehrman: Part One" by Eric Chabot
"A Look at Richard Carrier's Critique of Bart Ehrman: Part Two" by Eric Chabot
"The Death of Richard Carrier's Dying Messiah" by Thom Stark
"The Torturous Death of Richard Carrier's Dying Messiah" by Thom Stark
Mythtic Pizza and Cold-cocked Scholars" by R. Joseph Hoffman. This one isn't really much of a response to Richard Carrier. I included it because it's entertaining reading, but it's really just a snarky commentary on mythicists reactions to the Carrier/Ehrman drama.
There are others that I didn't include because I didn't think they contributed as much to the conversation or they lacked entertainment value. If there are others you'd like to include, put them in the comment section.