Babylon
Babylon is a modern masterpiece. It's endlessly ambitious and batshit crazy from start to finish. The fact that this film even exists is a miracle. There are several applause-worthy moments throughout, and there's a strong case to be made that this is Damien Chazelle's greatest work.
It's an absolute travesty that Babylon flopped both critically and financially. But I'm glad that, as more time passes, its reputation continues to grow.