Now, personally speaking, I’m quite a fan and active user of a wide and varied range of pornography – but I’m not so sure there’s a need to watch it in 3D.

I don’t like the idea of a man’s belly and scrotum protruding into my lounge as he services the needs of a dishevelled-looking East European lady. That crosses a boundary. I want to feel emotionally detached. I don’t want a starring role. I’d never be able to perform under that sort of pressure.

But that’s precisely the sort of in-your-face and in-your-living-room approach to movie-watching being taken by Glacier Media Systems, with its Glacier Iceberg 3D entertainment system promising to bring your existing movie collection into 3D somehow, should you have…