Gravity star Sandra Bullock: 'What we do, it's all scifi'

Subscribe to The Guardian: http://bitly.com/UvkFpD

Sandra Bullock, star of Alfonso Cuarón's thriller about an astronaut stranded in space, talks to Andrew Pulver about the film's existentialist undertones and answers questions from users of the Guardian's film site, including Haigin88, The_Truth_Hurts and Stalky. Gravity, in which Bullock stars alongside George Clooney, is released in the UK on Friday