Metallica: Some Kind of Monster is a 2004 American documentary film about American heavy metal band Metallica. The film follows the band from 2001 to 2003, a turbulent period in the band's history which included the production of their 2003 album St. Anger, frontman James Hetfield entering into rehab for alcoholism and the departure of bassist Jason Newsted as well as the hiring of his replacement Robert Trujillo. The title of the film comes from a song from St. Anger.