The things you find out on design-love mailing lists.
In InDesign CS3 or CS4, go to InDesign > About InDesign. When the splash window comes up, slowly type butterfly, and it should turn into an animated field with butterflies flying around. Feel free to click on a butterfly and pin it in place. You can even pin multiple butterflies at once. If you play long enough, a green alien in a spaceship will come and knock down some of the butterflies. Press Esc to go back to whatever you were supposed to be doing in the first place.
I thought she was joking; she’s not. Go have some stabbing butterfly fun.
[I definitely thought the green alien was a joke. It’s not.] [yes, ALL of us are procrastinating.]