I just popped my K2I and my K3 onto my flatbed scanner to show a comparison of mine. The images on the computer don't even look nearly as good as with plain eyesight.
Image with only rotation 90 degrees and cropped (no other adjustments):
Left image with white border is the Kindle 2 International. Right image with black border around screen is the Kindle 3.
Link to original 600 dpi scan with no editing
http://img829.imageshack.us/img829/8053/scan1v.jpg