HBOs series staring Jill Scott is set in Botswana. ONDemand has a series primer which discusses Botswanas history and its leader, Seretse Khama, who married a white woman.
http://www.hbo.com/events/no1ladies/index.html
http://en.wikipedia.org/wiki/Seretse_Khama
http://www.hbo.com/events/no1ladies/index.html
http://en.wikipedia.org/wiki/Seretse_Khama