I made a short clip of the texture pack turned ON and OFF, the changes are slight but still nice, You will not notice it on every object, I tried it on some caution tape in the game and there was no difference at all, yet the difference on the news paper was noticeable.
You will not see it here on this little embeded screen, you should watch it in HD and in full screen then you will see it.
[media]http://www.youtube.com/watch?v=8-9jcyeXwyk[/media]