This is the video of Snoop Dogg vs. Charles Barkley mentioned in the diavlog:
http://www.youtube.com/watch?v=Exz0yNdvksg&feature=related (the three minutes of Snoop Dogg being on the George Lopez show)
http://allhiphopsports.blogspot.com/2010/01/george-lopez-show-charles-barkley-is.html (a differently edited version that puts together the reveals for both Barkley and Snoop Dogg to air on Barkley's sports TV show... where one of the astute commentators notes that Barkley is both blacker and whiter than Snoop)
Link.
"Razib Khan has an academic background in the biological sciences, and has worked for many years in software. He is an Unz Foundation Junior Fellow. He lives in the western United States."
Razib's writings can be found on his blog, Gene Expression.