This is a pretty neat demonstration of an assembly instruction manual to put together a piece of furniture for WP7. It has a 3D interactive guide as well as a 2D guide. You can manipulate the images in 3D as well so you can see whatever angle is best for you as well as zoom in. I can see this being very practical and a lot better than the 2D guides where you’re always trying to figure out which side is up.
more information is available at http://www.simplysim.net/wp7