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" Who Do You Think You Are? returns for its third season on Friday, February 3 at 8/7c on NBC, when 12 more celebrities will trace their ancestors and discover hidden stories from their past.  Watch the promo for Who Do You Think You Are? below:   Martin Sheen, Marisa Tomei, Blair Underwood, Reba McEntire, Rob Lowe and Helen Hunt are among the celebrities who will delve into their ancestry on the new season.  Rita Wilson, Edie Falco, Rashida Jones, Jason Sudeikis, Jerome Bettis and Paula Deen will also explore their roots in the NBC genealogy show, executive produced by Lisa Kudrow. Announcing the new series earlier this month, former Friends star Kudrow said: &amp;quot;We&amp;#039;re very excited about the stories we have this season. This fantastic group of people we have will take us to countries we haven&amp;#039;t visited before, which is thrilling and gives us glimpses into crucial details of history that not only shaped their families, but our world.&amp;quot; &amp;amp;gt; Read Digital Spy&amp;#039;s full TV headlines "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/tv/ustv/news/a362498/who-do-you-think-you-are-season-three-watch-video-preview/>