That man can play anybody. Favorite modern actor for sure. Gangs of New York, The Crucible, There Will Be Blood, In the Name of the Father. Damn good actor and very selective.
Day-Lewis' method acting is insane. He went to a private island for 8 weeks to get into character and read hundreds of books on Lincoln. He stays in character throughout all of production until he is officially wrapped.
ETA: maybe that's why he only makes a movie every few years and usually wins an Oscar for it.