If you know anything about Christian Bale you know that his preparation for a role is nothing short of extreme. Using a term called Method Acting, Christian Bale brought the character of Patrick Bateman to a whole new level for American Psycho. Without the amazing performance by Bale, American Psycho would not have the following it does today. Whether it's Christian Bale in American Psycho, Daniel Day Lewis in There Will Be Blood, or even Jared Leto as The Joker, Method Acting is a tool used by only a few actors today but it seems to bring out the best in all of their performances.