I like fireworks. I'm not any kind of expert but I like ooh-ing and ah-ing at them. So I made this DirectX/Windows screensaver many years ago.

The code is ugly or else I would release it. It needs a rewrite and more types of fireworks and maybe it should run all on the GPU and be OpenGL, too, so Mac and Linux people can enjoy it since I (Update: ended up buying) might buy a Mac....