Bob Dylan

Bob Dylan is an asshole. That's the impression left by Don't Look Back, the 1967 film that showed the troubadour humiliating a student journalist and committing other ungracious acts while touring England.

Martin Scorsese's documentary No Direction Home, released 38 years later, puts Dylan's behavior in context. Home depicts an artist under enormous pressure. When he wasn't getting booed for going electric, Dylan had to account for wearing Triumph motorcycle T-shirts.

Now in his 60s, Zimbo remains a restless, constantly touring figure. His 2004 autobiography, Chronicles: Volume One, and weekly satellite show, Theme Time Radio Hour, have revealed an articulate side that concertgoers seldom see. Live, he still lets the music do all the talking.