One of the great things about the 'Iron Man' franchise is that they employ fascinating actors who don't necessarily do action movies. Before 'Iron Man' you didn't associate Robert Downey, Jr. and Gwyneth Paltrow with those kinds of films. There's an emphasis on repartee and wit.

You either are a good director or you're not.

I've played an awful lot of repressed people.

You either hear the story and you're curious, and you're sort of sympathetic, or you think, "Ugh, how horrible." That's dehumanizing. How about we take that and turn Christine Chubbuck into a person and it's not about the final act, it's about her life. I felt that really strongly, and I felt a sort of deep sympathy with her. It's also why I do what I do. I want to try to make difficult people somehow relatable.

There are people all over the world who like to write fan letters in the voice of their pet: 'Hello, my name is Fifi and I'm a labrador and I think you're great. Paw paw!'

One aspect of my mum's personality that has influenced me is her love of Hollywood and the golden era of black-and-white films.

If you act scared, your body produces adrenaline.