http://www.dailymail.co.uk/femail/article-2533341/Italian-ar...
There are a few other pictures and how well the medium of Lego works for pixelated art.
There are a few people on this thread posting 'things made with Lego' which is a different thing to using Lego for pixelated art.
I think that you could build a small business out of making pixelated Lego for people wanting to buy their new-borns some Lego. Imagine if in the bedroom the Lego starts as a bright picture on the wall, out of reach. Then when they can reach it then see what happens. If they have no Lego then do they work out that you can make things with it? Or do we need marketing and instructions with box artwork?
Also interesting would be a Lego sorting machine that you tipped random bricks into for it to then print out as pixelated art. It would scan the bricks and then show you exactly what images you could make from the bricks and also dither a given image to the palette and availability provided by the bricks dropped into the sorter.