<P> Who Do You Think You Are ? is an American genealogy documentary series that is an adaptation of the British BBC series of the same name . In each episode , a different celebrity goes on a journey to trace parts of his or her family tree . The show premiered on NBC on March 5 , 2010 , as one of the replacement shows of The Jay Leno Show . It ran on NBC for three seasons before being cancelled in 2012 ; it was then picked up by TLC , where it has aired for six additional seasons . </P>
<P> Who Do You Think You Are ? is an American genealogy documentary series that is an adaptation of the British BBC series of the same name . In each episode , a different celebrity goes on a journey to trace parts of his or her family tree . The show premiered on NBC on March 5 , 2010 , as one of the replacement shows of The Jay Leno Show . It ran on NBC for three seasons before being cancelled in 2012 ; it was then picked up by TLC , where it has aired for six additional seasons . </P>
who do you think you are premiere date
who do you think you are premiere date
March 5 , 2010
March 5 , 2010