Times Online:

The British will resist. This is, of course, ridiculously parochial.
No other country is quite so contemptuous of the literary genre, though, in the movies, we happily accept SF as high art: Andrei Tarkovsky’s Solaris is rightly regarded as a great film, as is Ridley Scott’s masterpiece Blade Runner. (If you want to see just how great Scott’s film is, the seventh and “final” cut has just been released in cinemas and on DVD. It’s visually enhanced and, says Scott, “tweaked”. It looks, and is, superb.) The further oddity is that fantasy – Terry Pratchett, Tolkien, Philip Pullman – is not embarrassing to us at all; indeed, it’s downright respectable. Perhaps this is because these are seen as children’s books that grown-ups can read, whereas SF is seen as irredeemably adolescent. This is to ignore the fact that it tends to be much more demanding and much bleaker.