Actors and crews go through a number of steps to perfect their imitations of these historical figures. Hair dyeing and styling and makeup are just the beginning. Actors will also wear prosthetics to create new face shapes and smiles. They'll also study the motions, body language, and speaking habits of their subjects extensively to capture them on screen. Of course, they're different people, so at the end of the day, the role is successful or not depending on the actors' skills. Here are some of our favorite screen transformations. Some required little effort, while others demanded all kinds of adjustments....