Brian T. from Infinite-Bits writes:
The Uncanny Valley posits what most already instinctively know; something non-human taking on human properties is creepy. When an object that isn't living and breathing attempts to take on the mannerisms, walking-gate, skin, and facial features of a human, it's disturbing enough to make you feel... unnerved. I'm not just writing about creepy dolls or robots but see the Wikipedia example if you don't believe me. Don't get me wrong, I love playing graphical videogame masterpieces, but we're through the looking-glass at this point.