The third season of "Who Do You Think You Are?" debuts on NBC Friday night February 3rd at 8 PM Eastern and Pacific time and 7 PM Central. The popular show tells the family history of a popular celebrity each week. This year the stars to have their ancestries chronicled are Martin Sheen, Marisa Tomei, Blair Underwood, Reba McEntire, Rob Lowe, Helen Hunt, Rita Wilson, Edie Falco, Rashida Jones, Jerome Bettis, Jason Sudeikis and Paula Deen.
Both genealogists and celebrity watchers will want to tune in.