In the semi-biographical movie of rapper Eminem's pre-fame life, the best freestyle rap in 8 Mile are why the movie remains so popular. Eminem had already proven himself one of the greatest rappers of all time with his extremely successful and controversial career. Making his acting debut, the rapper, real name Marshall Mathers, brings his story to life in this Curtis Hanson-directed drama that looks at an underground music community providing some of the best freestyle raps in Eminem.