I downloaded this monster from blendswap: http://www.blendswap.com/blends/view/70375
Created a run cycle and integrated it into a real life shot :) Also did a quick fire simulation for some extra awesomeness.
Rendered on the render farm http://blendergrid.com
http://youtu.be/TRVxAZvAf4M
You should (please) make a tutorial on how you did all this!
Fantastic!!! Great video