It’s pretty difficult to mess up a documentary about the world’s greatest art museum, but this Sky-sponsored 3D burble about the astounding collection amassed by generations of popes does it in style. Inappropriately heavy corporate branding alternates with frenetic musical garnish, excruciatingly “artistic” re-enactions with sonorous drivel apparently downloaded randomly from a cliche generator. With so much amazing stuff to aim a camera at, this is not a complete waste of time; but only if you can tune out pretty much every bit of “added value” the film-makers shove on. Event cinema ought to be better than this.