Avatar is a film.
Avatar ( marketed as James Cameron 's Avatar ) is a 2009 American epic science fiction film directed , written , produced , and co-edited by James Cameron , and starring Sam Worthington , Zoe Saldana , Stephen Lang , Michelle Rodriguez , and Sigourney Weaver . The film 's title refers to a genetically engineered Na ` vi body with the mind of a remotely located human that is used to interact with the natives of Pandora . It also became the first film to gross more than and the best-selling film of 2010 in the United States .