To start with, the thing most often said of Nicolas Cage: he is weird-looking, with constituent parts that don’t promise to add up to a movie star. His hair, like cultivated grassland, is lush at the top and sparse at the root. There is something puppety about his face. And, of course, there are his eyes, which, like the Woody Allen joke – “You have the most eyes I’ve ever seen on any person” – qualify him to play both romantic leads and psychopaths. At 49, Cage overturns every industry standard, and there’s no denying it: the result is transfixing. “Have a blueberry muffin,” he says in that agonised drawl, and flashes a goofy grin.