Um. We concentrated more on identity than humanity, but I guess it's pretty similar in the end. In Blade Runner it's ambiguous as to whether Deckard is a replicant or not - but doesn't that show how very humane replicants are? That we, as humans, are unable to distinguish them? Crossing over to Frankenstein with that, I guess if the monster had the appearance of a human (not grotesque, I mean) he would easily blend in as one. You could go on about the fact that both Victor and Tyrell chose not only to create life, but to create it in the image of man and what that says about the way humanity views itself. And the relationship/death factor - obviously Roy and Priss want more life, whereas the monster wants companionship, then when he loses that opportunity, pretty much welcomes death. As does Roy after Priss dies. And it's pretty human to value another so much.