If you share a common ancestor with somebody, you're related to them. It doesn't mean that you're going to invite them to the family reunion, but it means that you share DNA. I think it's fascinating.

Very few, if any, first-generation black or white or Asian kids will pursue a Ph.D. They'll pursue the professions for economic security. Many will go to law school and/or business school.

So when you do your family tree and Margaret Cho does hers, and... Wanda Sykes and John Legend... we're adding to the database that scholars can then draw from to generalize about the complexity of the American experience. And that's the contribution that family trees make to broader scholarship.

The more you learn about yourself and your family tree, your self-esteem goes up. They will learn archival skills, historical analysis and science skills. You learn all this in the most seductive way, and that is through learning about yourself. Who doesn't like talking about themselves? It doesn't seem like science or history, it's just fun.

You notice patterns. White guests often are mortified - that word again - when they learn their ancestors owned slaves. But I've never had a black guest who was upset to learn about white ancestry that probably involved forced sexual relations.

Everybody wants to have sex - you don't have to have a baby when you're 16. You don't have to do drugs. I think our Sunday schools should be turned into Black history schools and computer schools on the weekend, just like Hebrew schools for Jewish people, or my Asian friends who send their kids to schools on the weekend to learn Chinese or Korean.

Very few Black people ever embraced back to Africa movements, and very few actually, a tiny number actually went back to Africa. They said, "We are going to make America live up to the ideals of the Declaration of Independence and the Constitution of the United States." They produced one of the world's great cultures; they produced individuals who were just as brilliant and made contributions to the world civilization. In fact, they produced a world-class civilization, the African American civilization, in music, in dance, in oratory, in religion, in writing.