I realize I'm posting a lot about Radiolab lately, but I just listened to the Pop Music episode and had to share this.
American country-western music is universally loved, all around the world. Aboriginal Australians love Hank Williams, for example, and Dolly Parton is a big hit in Southern Africa. While reporting in Afghanistan, an American reporter and accordian hobbyist named Greg Warner discovered Afghans LOVE JOHNNY CASH, as evidenced in the video below. The audio and sound quality is not great, but if seeing this crowd of guys going nuts over "Ring of Fire" doesn't bring a smile to your face, I don't know what will.