Is it just me, or was this unintelligible? Not just 'hacking' into someone's dreams but manipulating their thoughts inside Dreamworld. And then, to add to the confusion, we had dreams within dreams within dreams! If the complex plot had an internal logic which appeared not to defeat Leonardo DiCaprio - it certainly defeated me. There is considerable homage to the MATRIX films, with aerial fights and frozen motion sequences: kid's stuff, but what do kids make of the anarchic storyline?

If you die in someone else's dream, you can either wake up alive or go to a place called Limbo (not the same as the one Dante envisaged) which looked like the flooded New York of The Day After Tomorrow a few decades on. The plus side of Limbo for Leo was that it reunited him with his dead wife (Marion Cotillard), but was this his limbo or hers? Best not to ask.

If MEMENTO, with time running backwards, was Christopher Nolan's "set text" for Filmgoing GCSE, I guess INCEPTION represents A-Level movie comprehension.

And I seem to have failed.