When Hollywood actors have gone for prestige and critical, they often turn to playing real historical figures. Not only do they provide real drama to prop up the events depicted in the screenplay, but they allow the actor to take on a physical transformation, becoming that historical figure. More often than not, that physical transformation brings the actor VERY close to the appearance of that actual icon.
Thanks to entire costume, hair, and makeup departments, actors can channel the appearance of the figures in an uncanny fashion. In this gallery are dozens of examples of stars losing themselves to take on the roles of historical figures.