written, produced and directed by John Rubin ; a production of NOVA and National Geographic Television in association with John Rubin Productions, Inc. ; WGBH Boston
directed and produced by Taggart Siegel ; produced by Teri Lang ; narrated & written by John Peterson ; produced in association with Independent Television Service (ITVS) ; produced by Collective Eye, Inc
director, Gillian Darling Kovanic ; narration written by Amanda McConnell and Bruce Martin ; produced by Tamarin Productions Inc. in association with the Discovery Channel, USA ... [and others]
written, produced and directed by Linda Garmon ; a Nova production by the WGBH/Boston Science Unit in association with BBC-TV, NDR International Hamburg and Nederlandse Omroepprogramma Stichting
Dreamworks Pictures and Twentieth Century Fox ; a Cruise/Wagner, Blue Tulip, Ronald Shusett/Greg Goldman production ; directed by Steven Spielberg ; screenplay by Scott Frank and Jon Cohen ; produced by Gerald R. Molen, Bonnie Curtis, Walter F. Parkes, Jan De Bont
Participant Media & River Road Entertainment present ; a film by Robert Kenner ; producers, Robert Kenner, Elise Pearlstein ; writers, Robert Kenner, Elise Pearlstein, Kim Roberts ; directed by Robert Kenner