Will there be a place where they can be downloaded? A live Planet Earth desktop wallpaper would be pretty great.
edit: The largest image resolution seems to be 800x800 (well, 800x815, with the attribution footer). I wonder if the new satellite's imagery isn't part of this feed yet? I hope that's the case, because it would be incredibly cool to be get such high-res images.
If you can set your wallpaper from the commandline, or have the wallpaper refresh from an image on disk, you could use it for a live wallpaper.
I'm also going to have the scraper check if the image has changed every 10 minutes and have it update at [1] if it has, but the image will only be in 1,100px x 1,100px resolution.