The British series 'Who Do You Think You Are?' is the basis for the new reality skein of the same name premiering April 20 on NBC.
NBC has added the genealogy-themed reality skein "Who Do You Think You Are?," based on the British series of the same name, to its spring lineup.
Starting April 20 the show will air Mondays at 8 p.m. -- slot occupant "Chuck" will have finished its season run by then.
Reality skein will feature celebs, including Lisa Kudrow, Sarah Jessica Parker and Susan Sarandon, as they unearth their family trees. Kudrow's Is or Isn't Entertainment produces, along with the U.K.'s Wall to Wall Prods. Kudrow, Dan Bucatinsky, Don Roos, Alex Graham and Lucy Carter are exec producers.
Show is based on the BBC documentary series created by Graham.