May 15, 2012

NBC has cancelled Who Do You Think You Are after three seasons. The genealogy documentary series, which premiered in March 2010, followed one celebrity in each episode as they traced back through their family tree to learn about their roots.

The show aired a total of 27 episodes and featured such stars such as Matthew Broderick, Gwyneth Paltrow, and Martin Sheen. The series finale is set to air this Friday, May 18, 2012.

(Source: TV by the Numbers)