Marcus du Sautoy

Sometimes you see films, not just science fiction films, where you get the sense that if the camera were to pan just to the left or the right, all of a sudden you'd be seeing light stands and crew standing around. But with 'Blade Runner,' the beauty of it is that it felt like a real, breathing city.

You know when Hollywood does a great big blockbuster that really wraps you up in a world, and lets you believe in extraordinary things that move you in some way, in an almost operatic sensibility? That to me is the most fun I have at the movies.