Clint Eastwood turned 80 years-old in May and he might be, in his old age, one of the busiest men in Hollywood. If he’s not the busiest, then definitely he might be one of those most acclaimed filmmakers of the last decade. Think about it: Invictus, Gran Torino, Changeling, Letters from Iwo Jima, Flags of Our Fathers, Million Dollar Baby, and Mystic River are highly acclaimed (and awarded) films in the last six years. But this should come at no …