I actually don't think he is as good as they say, although I suppose, like The Beatles, he was a bit of a pioneer.
Of course, when I was at Junior School, shortly after we moved to Hertfordshire, one or two of the teachers inflicted him on us, and I thought he was okay, albeit just an average folk singer.
Skip forward about eleven years to Uni and I heard his song 'Gotta Serve Somebody' for the first time, and finding that he was a fellow Christian, (or professed to be for a while, depending on what you read) I found some of his songs suddenly took on a whole new meaning and I suddenly saw the originality and poetry of his lyrics. Insightful and profound, peppered occasionally with humour and acerbic social commentary. I soon discovered Like A Rolling Stone, Knockin' On Heaven's Door (which I thought was an original by Eric Clapton, and All Along The Watchtower. I even discovered that he wrote Quinn the Eskimo ;), which shows that he has a sense of humour. Unless the rumours are true and it is about drugs.
In any case, this Christmas, my sister got me 'The Essential Bob Dylan', so now I have two Dylan compilations in my CD Collection.
And yes, I appreciate that, as a Bona Fide Dylan fan I ought to have Blonde on Blonde.