Debra Dickerson made the case that Barack Obama is not really black (see the column here at Salon.com) 

Dickerson, author of "The End of Blackness," recently appeared on the Colbert Report.  It’s hard to know what to say about it.  On th one hand, it’s just really funny.  However, the humor touches on the struggle for identity that is inherant in the American Melting pot. 

(You’ll want to turn the music off first. Just scroll down and click the "pause" button on the Sonific player in the left-hand column and then click on the big arrow above.)