Johny Cash may be old school country, but if I'm listening to country -- THAT'S what I love best. How about you?
I did not realize he was not only a singer-songwriter, but also guitarist, actor and author.
Absolutely. And the *longevity* of his relevance while he was alive continues now that he's no longer with us. Did you ever see the movie where Joaquin Phoenix played Cash, and Reese Witherspoon played his wife June?
I don't believe so but I do like Reese Witherspoon - she was raised in Tennessee
Definitely a Southern belle. And she can sing, too. Both Phoenix and Witherspoon were nominated for Oscars for their portrayals -- Reese won for Best Actress!
Was the film Walk the Line?  It was nominated for 5 Oscars.
Yes -- thank you -- I couldn't remember the name. Even though that's the name of one of his best known songs. One of my favorites along with "Ring of Fire". 
I think some of his signature songs were also Folsom Prison Blues and Man in Black.
Ding ding ding! You are correct! Now you realize you're going to have to go and give them a listen, right?! ;-) I also love some of his late-in-life covers, like the haunting "Hurt" by Nine Inch Nails. The video is deeply bittersweet.
Seems like a lot of his music revolved around themes of sorrow, morals and redemption