I also liked the fact that other races didn't take to them as well as they did humans (though the fact that humans don't really like anything other than what looks like them is a pretty bleak (but honest) take on humans in general.)
I know it wasn't just for humans v humans, every race tended to stick to their preference for the same race. Like with reality, you get some NPC who are willing to look past the race issue whereas others are just bigots, though in some cases this is justified (i.e. the lizards being slavers and Elves being cannibals.)
