One of the recently featured panoramas is David Bergman's President Obama's Inaugural Address. This panorama was created from over 200 images with a final size of 1,474 megapixels. I was able to zoom in on the President as well as the snipers positioned on rooftops on buildings in the distance. The panoramas can even be downloaded and viewed in GoogleEarth (version 4.2 or higher). Check out the image from the Mount Rushmore panorama in Google Earth below.
This site can allow you bring images into the classroom in stunning detail.