Yay, updates!
To echo Joshua_Blue, that's a great site. Very handy being able to flip between images with the cursor.
In particular, I found flipping between these images to be quite amusing:
Upside down aerobics with Luke! - http://screenshotcomparison.com/comparison/89537
Vader feeling the rhythm - http://screenshotcomparison.com/comparison/89545
And of course, as always, terrific colour correction.