Copernicus

Here's a video from the History Channel on Copernicus (when it pulls up, don't let the "Beyond the Big Bang" title worry you; it's the name of the series--sigh--and doesn't come up in the video). Education.com also has a related science project to make a geocentric model of the universe. Here's one simple model, as well, to show how Copernicus explained the looped paths of the outer planets.