I agree with Rob (actually High Fidelity author Nick Hornby and screenwriter D.V. DeVincentis). Every dude should read this book even if you don't like Cash. Click here to order it online from Amazon.com.
Hey, I'm not the smartest guy in the world, but I'm certainly not the dumbest. I mean, I've read books like The Unbearable Lightness of Being and Love in the Time of Cholera, and I think I've understood them. They're about girls, right? Just kidding. But I have to say my all-time favorite book is Johnny Cash's autobiography Cash by Johnny Cash.
And no, I don't get any commission from sales.