Casting changes happen all the time but in these cases, they made a huge difference in the films. And sometimes, the reasons behind the changes are as entertaining as the films themselves.
There Will Be Blood
Paul Dano got the part of Eli Sunday after the previous actor, Kel O’Neill, was scared off by Daniel Day Lewis’ need to constantly stay in character. When it was pointed out that Dano already had a part, the director cast the actor as “twins”.