The CCNP Candidate's Guide to BGP with Travis Bonfigli
This is the best run down on BGP I've ever seen. I've gone through most of Keiths, I've sat through the CCIE one, and now this.
This is the first time I just got it. I got out my notebooks, and am madly taking detailed notes. This instructor is the best organized, most articulate and clear instructor on this topic I've ever seen. Please get him to do more! The depth of this lecture series is far deeper than the CCNP 300-101 blueprint mentions. In fact, he even dives into Regular Expressions and AS-Path ACLs.
This is the first time in 15 years since I first heard of BGP I really feel I've gotten it. (Ok, I never had to use BGP in production, and still don't, but now I really want to- which is another sign of an absolute fantastic instructor)