The uncanny valley can be used to good effect though: zombies for instance. It's very hard to make a zombie scary if you've got it too low on the uncanny valley

The uncanny valley can be used to good effect though: zombies for instance. It's very hard to make a zombie scary if you've got it too low on the uncanny valley that people can't get past going "aww it's so cute!" I haven't got the creepy feeling I have from other attempts, so I'd likely put them on the upward exponential out of the uncanny valley. I believe this may be greatly helped by the fact they're not supposed to look human. It's like the aliens in the new Star Trek, the absolute weirdest was the comedic throwback of the green chick. The lack of prosthetics to modify her made her feel so much weirder than any of the others. The fact that people are going to be going into the movie seeing spaceships and humans rendered in CGI before they see any of the aliens may help the aliens out of the uncanny valley. After wading through Disney Land and finding one of the humanoid robots they don't appear as false as the highly realistic androids being made in Japan despite not being of as good craftsmanship, why? Well I just walked through a mile of talking humanoid mice, anything remotely human is now believable! However something to point out: Capgras syndrome gives the sufferer this 'uncanny valley' effect to anyone the person knows, they'll believe the person has been replaced by a duplicate.