I ran across a YouTube video a while back (pointed there by The Bloggess) of someone dancing in their jammies to the tune "Code Monkey" by Jonathan Coulton. I have fallen in love with that song. It's on my iPod now, and since I'm listening to it at work as I type (What? I'm on my afternoon break!) this I thought I might as well share it. It's a great Friday-afternoon-get-me-outta-here song.
He's released it under Creative Commons, which I guess means people are free to do with it what they will,and a bunch of people have put videos together for it. Here's one of my favorites:
And here's the one that got me interested in the song in the first place: