Given that it's the last thing you see before getting up and leaving the cinema, an ending can have a serious impact on how you feel about a film. No one ever forgets that scintillating final shot of the DeLorean taking flight and rushing into the camera in Back To The Future, or that last devastating image of the Statue of Liberty in Planet of the Apes.
More recently, the final scenes of Avengers: Infinity War have had a pretty significant impact on audiences worldwide. Plenty have declared it to be one of the boldest, most unexpected blockbuster endings ever, whilst others have been less happy, predicting (no doubt correctly) that the upcoming fourth Avengers movie will render most of it null and void.
Still, while the ending of Avengers: Infinity War may have proved a little controversial, it isn't necessarily one that audiences and critics everywhere have outright hated. Endings so bad they induce groans, sighs of bewilderment, or - in the worst instances - snorts of unintended laughter.
Sometimes they make no sense; sometimes they're just silly; sometimes they're trying desperately to set up sequels which never happen. They're not always enough to completely ruin an otherwise good film, but they are enough to leave you with a bad taste in the mouth once the credits finally roll.