As the Spirit Rover gets ready to restart its duties, a panoramic photo from the other side of Mars taken by the Opportunity Rover has just been released. Click here(1) to view, and check out Space.com's Zoom Viewer(2) to examine more images.
1. http://archive.coasttocoastam.com/gen/page363.html?theme=light
2. http://www.space.com/php/multimedia/zoomviewer/