Glen Campbell's music, specifically Wichita Linemen like someone else said, is amazing in such a way that I probably won't hear it again after today for another ten years and it will still be just as awesome then. Nice song drop there. I don't like country music in general but my Dad does and I would like to submit the Elvis Presley song "Kentucky Rain" as a forgotten classic. maybe thats not country tho, oh well.
Also, Johnny and Bob Dylan "Girl From the North Country"
http://www.youtube.com/watch?v=2aSLMEKl8E4