Lucasfilm have developed a system which can take motion capture information from actors in a studio and turn it into a high-quality rendered scene in real time.
Pretty much a fusion of their video game technology applied to movie making.
"We think that computer graphics are going to be so realistic in real time that, over the next decade, we'll start to be able to take the post out of post-production; where you'll leave a movie set and the shot is pretty much complete" - Kim Libreri, chief technology strategy officer for Lucasfilm.
Their rig can even capture accurate facial expressions....
Personally I think this might be as revolutionary as the development of chromakeying and greenscreen technology a few decades ago, even if their claims of 'taking post out of post-production' are a bit far-fetched at the moment.