Robots nowadays can mimic human face expression. Prof. 
Hiroshi Ishiguro from the 
Intelligent Robotics and Communication Laboratory in the 
Osaka University has designed 
a copy of himself and 
a smiling female android. Both robots have human-like face expression. It is quite a breakthrough in humanoid robots. He made many robots to copy human so he calls the robots "
Geminoid" which comes from "Gemini" or twin.
Making humanoid robot to be more and more like human is a long journey. So IEEE Spectrum has a photo gallery of "
Ode to the Uncanny Valley".
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Ishiguro & The Geminoid
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The smiling female android
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The geminoid robots are also good experimental subjects in cognitive research or neuroscience. I will made another post about the cognitive research on my 
other blog.