Even today, most robots are intentionally designed to look robotic so they won't inspire the creeping fear that our "natural" reality is in danger of cybernetic replacement. Witness Sony's Aibo and Honda's Asimo.
As humans become more and more comfortable with technology, that fear becomes less and less prevalent. Compare the rogue replicants of 1982's Blade Runner, for instance, with the pretty persocoms of 2002's Chobits.
The taboo against realistic robots faded even further recently, with the introduction of Omron's realistic robot cat Necoro.
Wonder if it'll go after my mouse.