Remember that addictive Christmas lights song? It's baaaaack! (http://www.youfail.org/) 8)
More info -- esp. how the "original (http://www.youfail.org/noflash.php)" used Javascript to sync up the music with the visuals (!)
http://www.youfail.org/learn.php (Javascript .JS file (http://www.youfail.org/flash.js))