Unity is a 2015 American documentary film written, directed and produced by Shaun Monson, and the sequel to the 2005 film Earthlings. The film is narrated by one hundred actors, artists, athletes, authors, businessmen, entertainers, filmmakers, military personnel and musicians. The film was released worldwide on August 12, 2015. This is Ryan O'Neal's final film role before his retirement from acting in 2017 and his subsequent death in 2023.