Art of Cinema on Instagram: "Christopher Nolan cast Aaron Eckhart as Harvey Dent in The Dark Knight (2008) after seeing Eckhart's performance in this movie. Writer and director Jason Reitman wrote individual letters to each of the stars in the film, telling them why they would be right for the part. Every one of his first choices accepted their parts, and most thanked Reitman for his great letter. Film: Thank You for Smoking"