When I was in college, I was an English major, but I was part of this great group at Stanford called the Company. We didn't know any better, so we did it all; we did King Lear, we did Hamlet, new plays ... And we did it all in a covered wagon that we took around the Bay Area. We all put our makeup on in one cracked mirror. It was the most fun I've ever had.

What I love about the 'Alien' franchise is I would do all kinds of films - dramas, comedies, whatever - and every now and then I'd be in this science fiction blockbuster that would re-introduce the character and me to a lot of audiences around the world and allow me to go back and do the smaller films again, so it was really a good balance for me.

I changed my name when I was about twelve because I didn't like being called Sue or Susie. I felt I needed a longer name because I was so tall. So what happened? Now everyone calls me Sig or Siggy.

Once I put that wig on, I didn't say an intelligent thing for four months. My voice went up. I walked differently. I'd ask incredibly stupid questions.

I worked hard and made my own way, just as my father had. And just, I'm sure, as he hoped I would. I learned, from observing him, the satisfaction that comes from striving and seeing a dream fulfilled.

I really enjoy working with younger actors. I just feel like we're all peers together.

I feel self-doubt whether I'm doing something hard or easy.