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From roots in the Deep South to the slums of New Jersey, "Who Do You Think You Are?" follows the journeys of some of the most well-known names in American popular culture. Watch as celebrities discover unknown details about themselves and their families while researching their ancestry with the help of historians and genealogical experts.

After Jay Leno's second retirement from the program, Jimmy Fallon stepped in as his permanent replacement. After 42 years in Los Angeles the program was brought back to New York.

Jonathan Ross's take on current topics of conversation, guest interviews and live music from both a guest music group and the house band.