7. Rachel McAdams
Rachel McAdams and Ryan Gosling faced a lot of off-screen difficulties in The Notebook, despite their on-screen connection. He even went so far as to demand that McAdams be replaced, pressing the director to act quickly. Rather, the director acted as a go-between, letting them let out steam in a frustrated argument. Surprisingly, things went more smoothly, and McAdams carried on with the movie. It would have been interesting to be a fly on the wall during that tense conversation.
