The creators of "Whose Line Is It Anyway" are back with a new improvisational series, this time combining the format with an interview show. Each week celebrity guests, including David Hasselhoff, Ricky Gervais and Jerry Springer, visit to remember important moments of their lives. After the stories are told, main improvisers Wayne Brady, Colin Mochrie and Jonathan Mangum take the stage with guest performers to re-enact the memories through the lens of comedy or as a game. Fred Willard hosts.