I agree with Brian.
I'm wondering if this guy used Poser or something else to create these with. I myself downloaded blender which is a 3d program like poser, but free. I played around with it a couple itmes but couldn't seem to figure it out very well. Course that was right after I got it and I now have broadband. So when I get some time in the near future I'm going to fire it up again and have the manual up simultainiously (which is housed online) and see if I can figure it out. I think you can do people in blender as well, but I'm not sure.
So far I managed to do a pretty cool ship that looked like like an A-wing or something, only not as wide. but like an idiot, I didn't save it. *sigh*