A once-successful heavy-metal band with copious riches, numerous hits, and millions of fans worldwide whose members hate each other and haven’t released a studio album in five years. It sounds like the formula for an episode of VH1’s “Behind the Music.”
But with “Metallica: Some Kind of Monster,” documentary filmmakers Bruce Sinofsky and Joe Berlinger (who co-directed “Brother’s Keeper” and “Paradise Lost: The Child Murders at Robin Hood Hills”) have crafted something deeper than a music-TV expos
