The uncanny valley of digital CG-characters slowly vanishes, technologies of different applications merge and provide stunning new possibilities.
A researchers team at the University of Washington gathered photographs of celebrities and created CG 3D models that animate. Here an example of the 3D digitization of Kevin Spacey, Daniel Craig and George W. Bush, driving whatever “Head” you throw at them. The driven heads are a created from online photographs.
Check out the whitepaper showing the process: [PDF] What Makes Kevin Spacey Look Like Kevin Spacey