eter Jackson has picked up the pace. He began his Hobbit trilogy at an amiable, meanderingly wayward canter, and tried the patience of believers and non-believers alike with that initial supper scene, almost an epic in itself. But this second episode commences with a narrative whipcrack – a quick flashback to Gandalf and Thorin tensely discussing their great plan in the snug bar of the Prancing Pony – and then we're off, at a tremendous gallop. The Desolation of Smaug is a cheerfully entertaining and exhilarating adventure tale, a supercharged Saturday morning picture: it's mysterious and strange and yet Jackson...