Chris Haley, nephew of the late Alex Haley, discovered he has ancestors in Scotland through a DNA test he took for Ancestry.com at the 2007 FGS Conference. He reunited with his cousin, June Baff Black, at the 2009 WDYTYA? Live! event in London.
I wrote about this earlier at http://blog.eogn.com/eastmans_online_genealogy/2009/02/haleybaff-family-reunion-thanks-to-dna.html and now Roots Television has a nice video available at: http://www.rootstelevision.com/players/player_dna3.php?bctid=14655160001&bclid=14621417001.