This isn't asking for your favorite....just what is the song most recognizable as Johnny Cash......

folsom prison blues i hear everyday on the radio

its the most recongized but not the beset!

That or Walk the line because of that jeans commercial.

I would suspect this one.

Ring of Fire is my favorite Johnny Cash song

I would have chosen Get Rythm

Ring of Fire then i heard i walk the line those were the first songs i heard

Ring of Fire I think was the best known, as in the past, but since the movie and all the reignited interest and thank God that a few young people aren't retarded and musically inept and became John R Cash fans, I thnik "I Walk the Line" is more well known now, in fact I walked in to the Philly Park casino and there was a rock trio playing it. And I want to reitterate cookie crumbler & say the question is what is his best KNOWN, not the one you like best.

I went down down down and the flames went higher