My first extremely basic demo! It just shows a brief particle engine. It shows 52 red particles move positively on the x and z axes, and then fade out when they get close to the screen. It is completely crappy, but I just hacked it together in like a half hour. No, I won't release source, because, as I said, it was a hack and I'd be embarrassed to show this crap.
edit: If you're browser gets confused and thinks the filename is particle and not particle engine.zip, open it with a zip file thing-a-ma-bob
PS: You need GLUT to get this to work.