Artist Mike Mitchell recently held a show at the kinda-famous Gallery 1988, in which he showed off a whole ton of nerd superstars with enormous heads, enormous eyes and tiny, tiny little arms.
You can buy prints of just about all of these from Gallery 1988's site, or if you're after something more authentic, some of the original pieces are there for $325 as well.
Mike Mitchell "Just Like Us" [Gallery 1988]