The amarok Anti-Geeking Jukebox is a small amarok script that runs a locked xscreensaver hack displaying the title, artist, album and album cover of the currently playing track.
It is written in bash and requires these external programs (all pretty common):
The Image Magick toolkit (specifically mogrify, convert and composite)
The idea was to create something to run at parties that would let people see what song was playing without letting them sit down and geek out (checking email, reading webcomics, whatever...). It was inspired by a good friend of mine with a bad habit for doing that.
It is still in a very early stage of development. There are no configuration options. I make no guarantees it will work any system other than my own (although I can't see why it wouldn't).