Finishing strong is one of the most important things to consider when crafting any film.
If you end on a limp note audiences will probably feel as though the last two or so hours, however engrossing they may have been, were a bit of a waste and they won't be in a rush to visit that world or a director's future work again.
Yet, while making sure their film (or even a complete series) ends on the highest of notes is definitely up there on a director's list of priorities, that doesn't mean they completely stop adding secret easter eggs or respectful tips of the cap as they reach the home straight.
Hidden character details, harrowing warnings and barely visible plot points have all been marched out during these ten well known movie endings and most fans were too busy scooping up the last bits of popcorn or prematurely packing away their belongings to notice them on the big screen.
Fear not, for in 2020 you'll always have a second chance to stream these cinematic beauties again and catch all ten of these unknown details on the second (or third/fourth) time of watching.