In the spirit of the 4th of July, here is a great fireworks screensaver called Skyrocket. The fireworks are rendered in 3D.
Be sure to turn on the sound (and tweak other features) by clicking on the Options button under the preview screen in the Desktop & Screen Saver system preference.
This breaks my heart, but it’s Mac-only. 🙂
needs a classical simulcast to make it complete but you can provide that with iTunes.