8 Mile might have been a fictionalized version of Eminem’s life, but the rapper actually pulled from parts of Anthony ... rapper Jimmy Smith Jr. a.k.a. B-Rabbit, while Mackie played Papa Doc ...

Anthony Mackie played the role of Clarence Papa Doc in the 2002 film, 8 Mile, directed by Curtis Hanson. It also marked Slim Shady's acting debut as he played James "Jimmy" Smith Jr in the film.