My next lego mosaic will be a picture of Lenin. The LEGO shop has some new mosaic pieces for dirt cheap so I'm buying $60 worth. all together it's 1800 1×1 LEGO mosaic tiles. However this will still probably not be enough for what I want to do. Below is the picture I will 'Brickolize' as they say.

The top is the original image and the bottom is the image 'brickolized' at 100 studs wide. I used Lugnet's Mosaic Maker to Brickolize the image. It's fun you should try it for yourself.
However if you are a WoW fan you are probably to busy wasting your life away in your basement to do anything fun or worthwhile.