Daniel Day-Lewis' commitment to his "Lincoln" role earned him a 2013 Oscar nomination. "Lincoln" When the first Oscar promos premiered, Seth MacFarlane poked fun at Daniel Day-Lewis' ability to get lost in his film roles.

In each of his movies, Day-Lewis seamlessly transforms into his characters on screen, sometimes going to extreme lengths to prep for his parts and stay in character.

And, it works. His efforts earned him two Oscar wins and another nod this year.

However, he isn't the only actor to go to extremes for his roles.

Anne Hathaway was willing to do anything to understand the misery of her tuberculosis-ridden prostitute in "Les Misérables," while Rooney Mara and Kate Winslet found themselves taking their characters off set.

From dropping acid to strapping their knees with belts, these actors prove they're willing do anything to play the part.