I just wanted to put an honorable mention out there for Cynthia McKinney, the other Black Presidential nominee for her (Green) party. As you know, she is a prominent African-American in politics who also happens to have natural hair.
She served my congressional district (4) in Georgia for many years. I appreciated having her as my congress woman and I hope that she attains her goal of 5% of the nation's vote for President though I think it's unlikely as future President Barack Obama has so much support. The highest Green party votes came in 2004 when Ralph Nader, consumer advocate, attained 3% of the vote.
If you are interested in finding out more about Cynthia McKinney click here, here, and here.