12 Movies That Made You Work Out The Answer Yourself

5. Inception

The Question: Was Cobb (Leonardo DiCaprio) still dreaming or not?

Christopher Nolan's ingenious sci-fi thriller had just about everyone debating its agonisingly ambiguous final image, where the spinning top totem is either still spinning or beginning to wobble depending on your interpretation.

The important thing to remember, of course, is that this was Mal's (Marion Cotillard) totem, not Cobb's, which has been theorised to in fact be his wedding ring. Nolan suspiciously obscures the ring from view during several pivotal scenes, presumably to keep the film's mystery keenly in tact.

Nolan himself has refused to confirm the truth, but he has noted that viewers need to recognise that, in those final moments, Cobb has finally accepted whatever "reality" has been presented in front of him.

Dream or not, he has embraced it wholeheartedly, and that's seemingly more crucial than what the nature of his reality actually is.