It's only a couple of weeks now until Atonement opens here in the UK, but you may well already have heard about the astounding five minute tracking shot that comes halfway through the film and takes in the retreat of the British Forces at Dunkirk - and we have an exclusive featurette tracking (See what we did there?) how they did it.
Now, in case you're worried, aside from revealing the fact that Dunkirk appears in the '30s and '40s set film, and that one of the major characters was there, this is not spoiler-ific in any way - but it is interesting stuff, and impressive in its sheer scale, so have a look and see what you think.