It’s one of those secrets that we keep even from ourselves that great acting, everything that we know in terms of consummate histrionic technique and achievement, tends to be something we experience from some form of smaller makeshift screen. Once upon a time this was a television screen and now may well be some form of cybernetic mutant but it’s still true that a fair bit of the world’s great acting along with so much of the great films of the past come to us at one or two removes.