@watchdeed ✨ on Instagram: "🎬 Interesting fact: One of the most remarkable facts about There Will Be Blood is the intensity of Daniel Day-Lewis’s preparation. He spent a full year researching the oil industry and developing Daniel Plainview’s distinct, menacing voice. His commitment was so immersive that it reportedly intimidated the original actor cast as Eli Sunday, who left the production after two weeks. Paul Dano, who was already playing the small role of Paul Sunday, was asked to step in.