In fact, my face has shrunk in the meantime, but it won't be particularly noticeable because it's covered up with hair. So I hope I'm not alarmed if I ever do sit through the five movies.

I often thought my gravestone would say, 'Here lies Gandalf. He came out,'

My memory of 3D movies is Fernando Lamas in a swashbuckling movie. And I suppose it had been the fifties, in which swords came out at you, bullets came out at you, things were thrown into the auditorium, apparently. All that sort of cheap, "Oh, look at us, we've got 3D" isn't in the film.

2D looks so flat. Well, it is, of course, it's flat. But 3D isn't. And for an adventure story that takes you into a long-distant, fictional world, it's ideal, I think.

As for the clarity of the 48 frames, I've heard people say that it looks odd, it's too demanding, there's too much information, you don't know where to look.

I tend to discourage people from calling me 'Sir Ian,' because I don't like being separated out from the rest of the population. Of course, it can be useful if you're writing an official letter, like trying to get a visa or something passed through Parliament. They're impressed by these things.

Splendid architecture, the love of your life, an old friend... they can all go drifting by unseen if youre not careful.