This is a screensaver module for Sam Streeper's excellent BackSpace screensaver. This module randomly moves "fireflies" (pixels) around on a solid background. I think it's way cool in total darkness and a complete washout in bright light. Judge for yourself - it's free. This package contains both source and a fat binary for the module, though it hasn't been tested on Intel. The makefile defaults to creating a fat binary for both Motorola and Intel.
To install, either copy FireflyView.BackModule to ~/Library/BackSpaceViews or /LocalLibrary/BackSpaceViews, or type "make install" from a shell while in the FireflyView directory; this installs in ~/Library/BackSpaceViews by default.