Citizen Kane.
Yes it is circle jerked hard by film lovers... For good reason.
This is what I might consider the first movie shot in what would be recognized as a modern movie format.
It is told non sequentially, the composition of shots is absolutely incredible.
It's a movie shot in 1941 that looks nothing like the other movies of the time. Literally decades ahead of its time. It looks like it could have been shot a few months ago as a period piece.
There's good reason for it being one of the most acclaimed movies of all time.
I see them on BlueSky more than any Mastodon or Lemmy instance, sadly. But that could just be my experience.