Displays fireworks (as in the familiar xscreensaver hack) on your root window. Unfortunately, there is no "stop xfireworks" at this time in the menu. That's OK, though, as it was an opportunity to teach the children how to use killall. Also, the fireworks "eat" the image behind it, much as JrXhangglider does.

See also:

http://packages.debian.org/xfireworks---- http://bugs.debian.org/xfireworks