UPDATE - JAN 2009:
This image is by far my most popular. I decided it would be worthwhile to do an update. Instead of 36 images, I've researched and found 36 distinct individuals and texture sets. Hope you enjoy the new mosaic as much as the first one!
I spent about 2 hrs last night searching for textures on Flickr I could use in Photoshop for adjustment layers. Here are my favorite 36 textures, all with Creative Commons Licenses (yay for sharing).
Created with fd's Flickr Toys.