The acclaimed alternative series 'Who Do You Think You Are?' is back for season 2 tonight (8PM ET, NBC), kicking off with 'Ugly Betty' and 'Desperate Housewives' actress Vanessa Williams.
In its first season, the show followed executive producer Lisa Kudrow; actors Matthew Broderick, Brooke Shields and Susan Sarandon; director Spike Lee; and former Dallas Cowboys running back Emmitt Smith as they traced their family trees on personal journeys of self-discovery.
In season 2, celebrities undertaking genealogical searches will include country superstar Tim McGraw, actors Steve Buscemi, Gwyneth Paltrow, Ashley Judd, Kim Cattrall, talk show host / comedian Rosie O'Donnell and singer Lionel Richie.
Williams told TV Squad she decided to search her late father's ancestry so she could redefine her idea of what it's meant to be free.