Bloggingheads.TV

Here is one excerpt, Henry Farrell and Megan McArdle, of course it is free.  Being a long-time fan of Harold Innis, I cannot help but wonder which kinds of messages are favored in this medium.  If print favors analysis, and TV favors storytelling, how about Bloggingheads?  There are comments here.  Here is Drezner and Brink Lindsey.