Plot holes matter, and no amount of the inevitable fanboy frustration that greets this kind of article can change that. You see, it's very simple: every brush stroke made by an artist makes a difference to the final painting - every mark is a decision in the story of the image, and it is the same for films. Every single thing we see on film, from hairstyles to camera angles to the way the light hits a particular vase in the background has been meticulously chosen by the film-makers: there are very few creative accidents. And yet as soon as a plot hole appears, everyone is too willing to shrug and simple say it doesn't matter - someone dropped the ball somewhere, but it makes no difference.
But of course it makes a difference, and for some fans the presence of too many major plot holes can make a break the reputation of a particular film-maker. Whole online communities react in disgust and anger and threaten to topple the world off its axis because M16's entire plan in Casino Royale relies on James Bond pulling a last minute straight flush out of the bag to beat the villain's already extremely impressive full house. But then conversely, sometimes it seems that plot holes don't actually matter as much as we might have initially suspected: great films can feature gaping holes and cracks right through them that we are willing to simply ignore in the interest of entertainment.
Perhaps those venomous fanboys were right - perhaps we should all just stop using our brains and enjoy the pretty pictures on screen without analysing the stories. Or perhaps not - these plot holes still count, and we still talk about them. It's just that their respective films are so good in every other department that we can accept the problems as an exception to the overall quality.
They didn't go away, they just didn't quite have the same derailing effect at the time; but had we been looking hard enough, or analysing cynically enough, these plot holes could well have compromised our enjoyment of the films. Sometimes, it seems, we're just more tolerant of mistakes than at other times.
So we're not talking plot holes from awful sci-fis that are already terrible or the mistakes made by Michael Bay, whose films are also terrible anyway. Just Class A movies all the way, and ones that were not spoiled despite these glaring mistakes that you probably missed...