I have always thought the original King Kong from 1933 was one of the most stunningly original movies of all time. The clever special effects still look pretty good, IMO (at the time people thought they looked great). If they had simply confined the story to the trip to Skull Island it would have still been a pretty cool movie. But they bring Kong back and he ends up scaling the newly finished Empire State Building (completed the year before)! And even after all those innocent New Yorkers are killed by Kong, they still make us feel sorry for him at the end!
Add to that Max Steiner's music score. In the early days of sound movies, not all movies had music scores. I think Dracula from 1931 plays a bit of Swan Lake over the credits, and that is it. Steiner wrote a complete score for this 1933 film, including the tribal music on Skull Island. His music as Kong acknowledges his impending death and looks lovingly at Fay Wray for the last time tugs at the heartstrings.
None of the remakes have the originality of that brilliant 1933 version. The special effects are better, but that's it. When I watch the original, I like to imagine it's 1933 and I have no idea what I am about to see. People must have been amazed when they saw it then.
That informative post is one of the things that makes FR so great.
You would probably enjoy the original Godzilla movie—the one that they cut up to make the Raymond Burr version.
The movie is an analogy for WWII and the dropping of the bomb on Japan.
They debate whether it is morally right to use the ultimate weapon (a bomb that removes oxygen from the ocean, and thus devastates it) to eliminate an external threat (Godzilla).
https://en.wikipedia.org/wiki/Godzilla_%281954_film%29