My dad loves this song. It's his favorite tune to play on the guitar. I sometimes even catch him sing it while listening to it on the phone when someone puts him on hold (apparently it is one of the favorite "listen while you wait" songs in telephone switchboards).
This song has a long history and so many covers. Coldcut's version the my favorite (though I hate the videoclip).
UPDATE - Youtube erased the video I had here so I updated this post with a new video.