“Finding Your Roots with Henry Louis Gates Jr.” is another of the Harvard professor’s wonderful television series for PBS. This is “must-see TV,” and a more than worthy sequel to three previous projects Gates has hosted about how some of us came to be what and who we are.

In this latest 10-part series, Gates explores the genealogical and genetic history of a diverse group of people, from entertainer Harry Connick Jr. and Pastor Rick Warren to former Secretary of State Condoleezza Rice and Brown University President Ruth Simmons. There are less famous people, but the famous get you hooked for the rest.