"Inception" does a difficult thing. It is wholly original, cut from new cloth, and yet structured with action movie basics so it feels like it makes more sense than (quite possibly) it does.

...is a colossal digital artefact, a virtual reality sci-fi thriller set inside the dreaming mind, with brilliant architectural effects...

With physics-defying, thunderous action, heart-wringing emotion and an astonishing performance from DiCaprio, Nolan delivers another true original: welcome to an undiscovered country.