Matt Kirtley (aka Aesopian) is a black belt in BJJ and is well known for his groundbreaking website Aesopian.com, an Awesome BJJ journal he started in 2006 as a blue belt which chronicles a countless number of Awesome BJJ techniques in great detail. Matt also recently started a podcast. Be sure to check out Aesopian's Awesome website and Awesome podcast.
http://www.aesopian.com/
http://www.aesopian.com/category/podcast/