I’ve just discovered the Quartz Composer. It’s a graphical tool for rendering things. You can use it to build all sorts of cool stuff. My first project was to build a 3D clock - seriously boring. So I’ve uploaded a screen saver I just finished. I tried to do an optimization pass on it, but it still grinds both my dual G5 and MacBook to a measly 20fps. Regardless, it manages to look good.