Simmer down guys, its something he put together in photoshop, not a representation of what humans should look like.

I personally think the human models hands are way too big and chunky and the feet need to be toned alot more than 3 polygons with a texture. Reduce the neck muscles and take the general chunkiness down a tad and you have yourself a decent human. The face is just left upto Blizzard to come up with something less ugly and more detailed than frowny faces with different beards.