If 's long career as a genius of the American spirit has taught us anything, it's that one fan's trash is another one's treasure. "I never looked at songs as 'good' or 'bad,' only different kinds of good ones," he once said. Dylan's music, from the magpie folk of his early years to the historically conscious balladry of his current albums, has always reminded us that our legacy includes not just ennobling beauty, but also minstrelsy, dirty blues, sentimental sappiness and rama-lama-ding-dong...