Article from an expert in the digital film industry in the US.
"Imagine a new film in 2010 starring John Wayne. Sounds crazy? Many people in the CG industry have talked about doing this. It is more likely, you will see Charlie Chaplin in CG first, but there will definitely be the ability to create this illusion for most audiences in the very near future."
(CG - Computer Generated - see full article under Charlie Chaplin at google news.)