Dave Grohl reveals another of his many talents. The drummer and Foo Fighters frontman makes his directing debut with this documentary about the Van Nuys studio whose famous recordings include Nirvana's Nevermind. Such classic rockers as Tom Petty and Mick Fleetwood pay tribute to the old-school analog studio. In typical Grohl fashion, he's promoting the film by forming a supergroup of Sound City all-stars including Stevie Nicks, John Fogerty and Cheap Trick's Rick Nielsen. (And perhaps new Grohl pal Paul McCartney).