Michael Fassbender didn't watch Alien before appearing in Prometheus.

The actor has a role in Ridley Scott's forthcoming movie and though it is a prequel to the classic 1979 sci-fi film, he opted instead to watch Blade Runner as part of his research because of the similarities in his part.

"I didn't revisit Alien before we did this. Sometimes I would do that, but in this case I didn't. I watched Blade Runner though, I took a look at Sean Young and Rutger Hauer. I live Rutger Hauer in that. With Prometheus, it stands alone to Alien, the way they put it and a good description is there's DNA strands that link the two. But it's a whole new world. I play a guy called David who's an android, so that's why I watched Blade Runner, there's something in those androids."

The Shame actor also admitted he used to use music to help him prepare for a role but now he is more "relaxed"' in his technique: "I used to use music a lot. In fact, that was my main key at drama school, but I don't really do it any more. Now I think I'm a little bit more relaxed in my technique. Now I just try to focus and relax."