post processing pixelated screen shader (Requested)

EDIT:
THIS SHADER WENT COMMERCIAL AND CAN BE DOWNLOADED FROM THE ASSET STORE.

(If you were lucky enough to grab it previously, you are free to use it anyway you want but i would appreciate your support if you buy it before using in a commercial product.)

I completely missed this post, just found it today by accident. This is awesome, thanks!

No screenshot?

photos are available in the wiki.

to make it easier on others: http://www.unifycommunity.com/wiki/index.php?title=Pixelated