As a little experiment in super high resolution panoramas, created a 61215x3105px image, stitched together from a number of 10Mpix images. I’ve uploaded here as a Zoomify Viewer so make viewing it quick and easy.
Update: Uploaded the image to GigaPan.com, which takes the heavy lifting of getting the pano into Google Earth 4.2 plus. (which can display it using the Pyramid system mentioned!) Highly recommended. It’s possibly a little buggy, but the new version of GE has only been out a day!