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Who Do You Think You Are? is a documentary series that is based upon tracking the genealogy of high profile celebrities that airs on the U.S. NBC network station and affiliates. The American show was adapted from the British version that aired on the UK BBC network. The premise of the show each week features a celebrity who embarks upon a journey to various cities and countries, in an effort to trace their family tree.

Lisa Kudrow was the first featured celebrity and an executive producer on the series, as a partnership between Shed Media, and NBC Entertainment. In each episode, family secrets are revealed and information is discovered about their families which sometimes answers and often shocks the celebrities.

The show's genealogy techniques center around finding historical facts rooted in

surname information. Featured celebrities for Season One included: actor, Matthew Broderick; writer and director, Spike Lee; actress and producer, Sarah Jessica Parker; Oscar winning actress, Susan Sarandon; model and actress, Brooke Shields; and retired American NFL football player, Emmitt Smith.

Season 2 of Who Do You Think You Are? aired in 2011 with eight episodes. The first show featured model, actress and singer, Vanessa Williams, followed by singer, Tim McGraw; comedian and show host, Rosie O'Donnell; actress, Kim Cattrall; singer and songwriter, Lionel Richie; actor and producer, Steve Buscemi; actress Gwyneth Paltrow; and actress, writer and activist, Ashley Judd. Of note is that Ms. Cattrall's episode was an edited version of the original broadcast which aired on the original British series.

When the show was renewed for Season Three, the air dates were scheduled to take place during the television season for 2011-2012. The season will feature the following 12 celebrities: Oscar winning actress, Marisa Tomei; actor and writer, Rob Lowe; chef and show host, Paula Deen; actress, comic book author, singer and screenwriter, Rashida Jones; retired American NFL football halfback, Jerome Bettis; country singer and actress, Reba McEntire; Emmy winning actress, Helen Hunt; Emmy winning actress, Edie Falco; actress and producer, Rita Wilson; comedian, actor and writer, Jason Sudeikis; actor, producer and political activist, Martin Sheen; and actor, Blair Underwood.

Who Do You Think You Are? also inspired similar international series in Canada, Australia, Ireland, South Africa, Israel, Sweden, Norway, Denmark, The Netherlands and Russia. The series ran for three seasons beginning on March 5, 2010 for a total of twenty seven episodes, before NBC canceled the show in 2012.

Who Do You Think You Are? is a series that is currently running and has 11 seasons (79 episodes). The series first aired on March 5, 2010.

Who Do You Think You Are? is available for streaming on the website, both individual episodes and full seasons. You can also watch Who Do You Think You Are? on demand atPhilo, Amazon, Hulu, Vudu, TLC, FuboTV, Microsoft Movies & TV, Google Play, iTunes online.

Tuesday 9:00 PM et/pt on TLC
11 Seasons, 79 Episodes
March 5, 2010
Cast: David Morrissey, Mark Strong, Nadim Sawalha, Amanda Redman, Sue Johnston
Watch Episodes
Clips & Extras

Who Do You Think You Are? Full Episode Guide

  • Actor Matthew Morrison explores his American roots for the first time and is surprised to discover his family's ties to the Revolutionary War. He learns of the bold lengths his ancestor went through to protect his allegiances and the brutality he faced on the battlefield.

  • Actress Regina King investigates her maternal family tree and uncovers an ancestor who was a passionate civil rights activist in Alabama; a man who came out of slavery, endured horrific violence, but never stopped fighting for his people.

  • Actor Josh Duhamel travels to England to investigate the extraordinary life of his twelve times great-grandfather and uncovers an astonishing, dark twist of interrogation and torture that rocks his belief system to the core.

  • Actress Mandy Moore is shocked to discover ancestors who lived in Australia and travels far, determined to unlock the mystery of how they got there. Moore is touched by the courage of those who made the journey and the sacrifice of those who were left behind.

  • Actress Jean Smart uncovers the curious tale of an unconventional ancestor in colonial Massachusetts, who got her children entangled in her own thievery ring and later faced execution when she was accused of witchcraft.

  • Actress Molly Shannon heads to Ireland in search of her mother's unknown family tree; her desperate ancestors were forced to choose between their faith and survival; a family legacy of bravery; meeting Irish cousins for the first time.

  • Megan Mullally explores a shocking pattern of dysfunction in her father's line; she finds her two-times great grandmother was bravely defying societal norms in order to fight for her family's survival, while struggling to hang on to her own sanity.

  • Actress and activist Laverne Cox pieces together the inspiring life of her African American ancestor, who challenged societal norms and bravely pushed the boundaries just years after Emancipation.

  • Jon Cryer's journey takes him from America to Scotland as he uncovers the dramatic tale of an ancestor who survived a catastrophic battle, endured horrific conditions as a prisoner of war, and was forced to come to America as an indentured servant.

Who Do You Think You Are? News

50 Cent Retraces His Civil War Roots in VH1 Rock Doc 'The Origin of Me'

Vh1 aims to put NBC's "Who Do You Think You Are?" to shame with their continuing series of Vh1 Rock Docs. How? By focusing on 50 Cent's ancestry, of course. "The Origin of Me" will debut on Vh1 on May 23rd and will follow the famous rapper as he uncovers his past. There's no time for the kind of fluff we see in some of these other celebrity genealogy docs: Fiddy, it turns out, has ancestors who were faced with the "Redshirts," the band that eventually led to the KKK.

Who Do You Think You Are? Video Clips & Extras

Scott Foley Discovers His Patriotic Roots Preview (00:39)