Stanislaw Klabik has recreated Clint Eastwood’s Thomas Highway from the movie Heartbreak Ridge with amazing detail, and wrote up how he did it for a great article on cgarena.

I used a simple head model for the first modeling. When I was satisfied with the result, with the base proportions of Eastwood´s face, I used this high-poly model for modeling a new topology with using the great Polyboost scripts. I used a bit heavy polycount for his head to achieve all major proportions of his face, because I planned to make some facial animations.

via Making of Gunnery Sergeant Thomas Highway – CGArena.