Imagine if someone, somewhere managed to find the exact formula for producing the most perfectly awful example of the uncanny valley (say, for a horror movie or something). Now, accept the fact that this organization is the Japanese Science and Technology Agency, and that they managed to produce the most disturbing machine you've ever seen, without even realizing it. The 33 kilogram CB2 is literally beyond words in its freakiness, not only in its nailing of the uncanny valley, but in its description. Apparently it emulates "the physical ability of a 1- or 2-year-old toddler, can turn over and stand up with assistance," has 51 compressed air-powered actuators, and has 200 tactile sensors in its "skin." It sends so many shivers up our spine to think of the CB2's lifeless putty coating as "skin" that it's a wonder we're even able to continue typing. Seriously, just so that we can stop and move onto something else a little more human (heck, even a motherboard feels homely next to this), go check out the video after the break of the horrifying little thing writhing about on the floor.
All of the potential uses for such a thing are all bad. I think Asimov forgot to make a law here.