At least four people have asked what I was talking about by the "matchstick rocket propulsion experiment" in my free response. Being a total nerd, I was super excited to share one of my favorite things in the world. It's one of my favorites because it combines two of my favorites: 1) elementary science experiments and 2) space and rocketry. So, without further adieu, I present a link to the sheer awesomeness. On NASA's site no less!
If you can't click on the link, just copy/paste it into your browser URL or omnibar.