Bullfrog Films presents ; a Macumba DOC production ; a documentary by Robert Cornellier and Paul Carvalho ; producers, Paul Carvalho, Robert Cornellier ; directed by Robert Cornellier ; script and research, Robert Cornellier, Paul Carvalho ; produced in association with RDI, CBC Radio Canada
Discovery Films ; Image Entertainment ; ThinkFilm ; a film by Werner Herzog ; directed, written and narrated by Werner Herzog ; produced by Henry Kaiser ; executive producer, Erik Nelson ; produced by Creative Differences Productions, Inc. for the Discovery Channel