I love Johnny Cash and have since I was young. I was lucky enough to see him in 1996 (the first concert I ever went to with my dad...I was 22). This was right around the time when Unchained, the second of his six "American" releases, came out. During the sessions for these fantastic albums, producer Rick Rubin picked the songs and Johnny made them his own. Here's the Nine Inch Nails cover that blew everyone away...and still brings a tear to my eye when I hear it.
Awww heck, let's do the Soundgarden cover too!