There's two types of people: Those who absolutely love "Ring of Fire," and "Folsom Prison Blues," and those who don't.
I'm part of the former, as I'm sure you are too 
As a fan of (I would assume) Alt-rock Clay, have you heard his cover of the NIN song "Hurt?" It's even better than the original.
His cover of "Hurt" is better than the original, yes... I love that song. But I like the older songs too. As a matter of fact, at this very moment, I'm listening to "Cocaine Blues."
Johnny Cash is nothing short of amazing. I've listened to him since I was little. It's really hard to pick out a favorite although "Cocaine Blues" is up there.
Have any of you seen the trailer for the Cash film, "Walk the Line", with Jaoquin(sp?) Pheonix as Cash? From the looks of the trailer, he pulls it off and has a voice thats similar to Cash's own.
