George Lucas was 60 in Star Wars: Episode III - Revenge of the Sith when he played the character 'Baron Papanoida (uncredited)'.
That was over 19 years ago in 2005.
Today he is 80, and has starred in 102 movies in total, 49 of those since Star Wars: Episode III - Revenge of the Sith was released.
In Star Wars: Episode III - Revenge of the Sith, I think George Lucas looks: