Deer Hunter (1978) was already mentioned in this thread a few pages back, but I re-watched it and have to give it a tout because, even though I always thought it was great, I realize now that I under-rated it at 10/10. It's simply off the scale.
Maybe I'm getting older, but this is the first time I appreciated the consistently serious tone in the film, which I think has been lacking in Anglo cinema since the 1950's.
This movie is a masterpiece with a wonderful structure that wastes no time on unnecessary transitions and frequently rewards the viewer with amazing scenery that briefly slips by behind an actor enlarged in the foreground.
It also has profound subtext supporting its main theme that blows away all the other war films, like Paths of Glory, Full Metal Jacket, and Apocalypse Now, and hits even harder than Bridge Over the River Kwai.
Re-watching makes me grieve that Michael Cimino was something of a one-hit wonder. May his memory be eternal!