Melissa,
I love your list! That said, I'm fully expecting you to renege on your Michael Pfleger pick if Obama doesn't get the nomination. Here are a few more, in no particular order:
Dennis Kucinich - In addition to fighting for the civil liberties of all Americans, Kucinich has paid specific attention to the struggle of African American people. During his presidential run, the Ohio Congressman was the only one to unequivocally support reparations, as well as acknowledge the racial dimensions of the No Child Left Behind legislation.
Tim Wise - For the past decade, Tim Wise has written and spoken about anti-black racism, white supremacy, and white privilege. Unlike many white activists, who take such stances for purely opportunistic purposes, Wise has consistently demonstrated his sincere commitment to social justice.
Paul Farmer - This Harvard trained physician and anthropologist not only works on the cutting edge of research, but also works tirelessly to provide free medical care in central Haiti. His organization, "Partners in Health," has provided critical support for people from Russia to Rwanda. He is the true meaning of a public intellectual.
Brad Pitt - I'm not sure what his politics are, but Pitts' commitment to rebuilding homes in New Orleans places him in front of many others, including our own government.