Sam Worthington

When I was young, my parents were these titanic, infallible figures. But Mum's illness and Dad's battles with diabetes and heart attacks had a ripple effect on me - reminding me of my own mortality and that these illnesses are genetic.

In the movies, they make you look good and tough, but in real life, it's completely the opposite. I do these ueber roles, I think, because in real life I'm quite shy and reserved. In real life, I'm a dork.

I remember being 24 in Los Angeles. And up until that moment, when my mom would call my cell phone and it would ring, I would be flushed with some sort of excitement that we all have - a little dopamine rush, when my phone rings - and I'd look down, and it would say, 'Mom.' It used to feel like a job to pick that up.