Henry Louis Gates walks the audience through his family tree.
Related LinksFaces of America on PBS
Gates announces renewal of popular 'Faces of America' series
Harvard Professor Henry Louis Gates Jr. announced the continuation of his renowned Public Broadcasting Service documentary series "Faces of America" at Northwestern's annual Leon Forrest lecture.
The series, which first premiered last year and featured the likes of Yo-Yo Ma, Meryl Streep and Stephen Colbert, will continue this year in a ten-week run. Madeleine Albright and Condoleezza Rice will be the first guests, according to Gates.