Olivia Munn

For 'Iron Man' I had to improv with Robert Downey Jr., which is like going up against LeBron in basketball. At one point he stopped and said, 'Can we give a round of applause to Olivia, because she's rocking it right now.'

I've never had much interest in spinoffery - the idea of writing in someone else's universe generally leaves me cold - but 'Doctor Who' is different. I've grown up with it. It's been part of my life since I was tiny, watching Jon Pertwee on a grainy black and white television in Cornwall and being terrified out of my mind.