The concept of "The Uncanny Valley" -- the theory that as artificial humans get closer and closer to looking real, they get creepier and more unsettling -- gets a lot of debate amongst movie and robot fans alike.
I think that there is merit to this. The article goes on to list seven films that illustrate the point. I found all of these creepy except for Jolie in Beowulf and the Hulk
7 Films That Got Stuck In The Uncanny Valley - Topless Robot