You might find this article interesting, if you haven't seen it. It is called The Uncanny Valley and it "plots emotional response against similarity to human appearance and movement". Which probably doesn't explain enough, but I don't want to quote half the article trying to tell you what it's about.
(no subject)
Date: 2005-12-17 02:57 am (UTC)http://www.arclight.net/~pdb/nonfiction/uncanny-valley.html