For more than 20 years, Metallica's rocked hard and lived hard, while remaining at the forefront of heavy-metal music. Their current documentary, Some Kind of Monster, chronicles the band's recent near-demise following the not-so-amicable departure of bassist Jason Newsted. It also shows a softer side of the rock giants. Fans peek in on their group-therapy sessions and see lead singer James Hetfield's life post-rehab. This doesn't mean they'll be all nicey nice now, though, does it?

"We've been emotional our whole career," says Hetfield. "I think we feel more creative than ever, and the anger is there. It is always going to be there.

"Music is a great therapy," the 40-year-old continues. "It has been a great communicator for me and I know that there has always been therapeutic value in writing lyrics since day one."

While it's simmering pleasantly below the surface, there's still a lingering power struggle between the front man and his Metallica co-founder, drummer Lars Ulrich. "We're us wherever we go," Hetfield notes. "Things flare up whenever we feel threatened, or whenever we feel insecure. We are two guys that want to lead and it is tough when you've got two leaders.

"We both have great ideas," he concedes. "Sometimes, you don't want to admit that the other idea is better or you've just got to go against it because that is your nature."

C'mon, the angry author of "Enter Sandman" must have something bad to say about his bandmate! "His ego is bigger, his mouth is bigger, whatever," Hetfield laughs. "But we've banked a lot of feelings and we can get through this and we can make some amazing magic moments."