Watch The Harrowing Trailer For 'Kurt Cobain: Montage Of Heck'

The Kurt Cobain documentary, "Montage of Heck," doesn't premiere on HBO until May 4, but Yahoo! unveiled the trailer on Wednesday. Featuring never-before-seen home videos, family photos and interviews with his loved ones, the two-and-a-half minute clip previews a film that critics have already called "the most intimate rock doc ever." Director Brett Morgen uses animation to illustrate Cobain's last few years, and the film also includes conversations between the Nirvana frontman and Rolling Stone...