This is the first animated desktop program that we've come across that not only works, but it's stable and doesn't affect the system performance at all (when you put every setting on low and limit FPS to 10). Give it a try - it's really cool!
DIRECT DOWNLOAD (529 kb) - From the Drempels website:
"Drempels makes colorful, swirling, hallucinogenic patterns that resemble a hurricane or tornado. It normally runs in your Windows background or 'desktop', replacing your old still-image wallpaper with gently-animating visuals... and meanwhile, you can use your computer just like you normally would. It uses very little CPU overhead - so little that it even runs smoothly on a 233 MHz system!"