www.bbc.com > entertainment > towards the bottom of the page you'll see this story> at the bottom of the story is a form (of sorts) to nominate your own "best song in the world".
My favorite? Like most folks that changes all the time. Right now I'm grovin' on St. James Infirmary w/ Cab Calloway & Louis Armstrong. "I went down to St. James Infirmary. Saw my baby there..."