Timesonline is reporting on a UK company called Image Metrics that has taken animation of human characters for games (Grand Theft Auto, Unreal Tournament) and films (Harry Potter, The Mummy) to an unprecedented level of realism. Not only are the animations fantastic, but the acquisition of facial details and expressions to create the animations is amazingly simple and fast compared to competing technologies.
Below is an amazing video of Image Metrics' most advanced animation to date, which they call their Emily Project. The woman in this video is a computer animation, NOT a real person!
If you want to learn more about this technology then take a look at this video interview from Leah D'Emilio.