VULTURE: What’s the hardest cut you’ve ever had to make?
DARREN ARONOFSKY: The hardest was while making this movie, actually. We had a scene near the end with Mickey in front of the mirror, where he’s talking and he just went to some incredibly deep, dark place. Seriously, it was possibly the finest piece of acting I’ve ever seen in my life. It was absolutely intense. And I had to cut it. It would have totally upset the balance of the film — it was that powerful. It was heartbreaking.
From “…on Mickey Rourke and the Benefits of Having a Small Music Budget,” New York Magazine (12.17.08)