You can try this little video. It is nothing flash, but simplifies testing the iPod Touch or iPhone screen. More will be added to the video once it becomes available. You can also submit screens for testing.
http://www.geekanoids.co.uk/2007/09/ipod-touch-iphone-screen-test-movie.html
http://www.geekanoids.co.uk/2007/09/ipod-touch-iphone-screen-test-movie.html