Thanks to chele for this link. Musician Dave Carroll traveled on United and his guitar was broken by luggage handlers. His efforts to get reimbursed for the damage were unsuccessful and so he wrote this song. I'm betting he still won't get his money back. As you know, I'm a big fan of writing letters of complaint (or praise) to companies. A song is even better. A viral web video is best.
You can read more at Dave Carroll's site.
UPDATE: It appears I was a little behind the times and United had already responded to the song and offered 'hush' money. Which Dave declined.