Thought this was interesting, a computer graphics team has developed new animation style that creates CGI characters to appear more real than ever now. You truely have to see it to believe it, here's the link to the story with the video, Video: Lifelike animation heralds new era for computer games - Times Online
It's only her face that is computer generated. The rest is still the source video. I wonder how long before we see this being used to bring dead actors back into films, etc.