I was clicking through a bunch of flash loops on a site that I found on Raf's tumblr blog. Some of them were pretty funny and a lot of them have really cool songs. Now I know this is really old (2006) but one in particular has been stuck in my head all day:
Apparently the music comes from the traditional Finnish folk song "Ievan Polkka" -- a part of the song that has absolutely no meaning at all (yes, the part in the flash is all gibberish!). Click on the picture above to see the actual flash I'm talking about.
There are a bunch of variations of Loituma Clock, including a real clock, a longer 5 minute techno version, and even a Darth Vader version! If you're interested in the Flash SWF file, you can find it here.
This site is the closest I can find to an "official" site for the Loituma Clock itself, while the Loituma Girl (taken from episode two of the Bleach anime series) has her own Wikipedia page. And of course this post wouldn't be complete without a link to the video of the real authors singing the original song.