Fun! Make sure to click and enlarge for full effect.

POPULOUS-AUDREY
by Craig Alan
More info about Craig Alan here. (Love the part, "Craig's creative luminance did not wholly shine until his family transferred to New Orleans...")
Well worth meandering over to the great post on Colossal, People as Pixels, which includes a number of fascinating photos of "people as the fundamental building blocks for larger images."
Big scale art involving crowds. How could that not be fun?