narrated by Daniel Stern ; written and directed by Steve Gooder ; an OSF Wales production for BBC and Thirteen Productions LLC in association with WNET
hosted and narrated by Chris Morgan ; a Mike Birkhead Associates production in coproduction with Thirteen in association with WNET ; producer, Mike Birkhead, Joe Loncaine
narrated by Paul Giamatti ; produced by Ann Johnson Prum ; written by Janet Hess ; a production of Coneflower Productions and Thirteen in association with WNET