I don't know how I missed this...
Usher's hit song OMG sounds exactly like the Christmas carol Homer tries to write at the beginning of the Simpsons episode "Dude, Where's My Ranch?", which first aired in 2003.
Judge for yourself.
Speaking of Homer, I meticulously updated my Homer Simpsons quotes page every weekend for years. It's waiting for you at http://www.torontomike.com/homer.html.
