Want more music on film? Five documentaries after 'Not Afraid'

As Eminem puts out "Not Afraid," a documentary on the fortunes of his record label, we select five crucial musical accounts from across musical genres. Despite its similarity to the two-part Tarantino action film "Kill Bill," this Bill Withers documentary can actually trace its title to the soul and R&B singer-songwriter's second album from 1972. Documenting G-funk guru Calvin Broadus Jr.'s rejection of stage name Snoop Dogg in favor of Snoop Lion at the time of