I feel along with voting we should all justify our pics for fun and science:
The quintessential film of the 90s. A decade that started an era of big budget sci fi action movies was drawn to a close with some actually genius film making techniques that had never been tried before. It spawned a whole following decade of terrible fashion, questionable life choices, and pseudo philosophy. It created a zeitgeist all on its own and influenced film making, adverts and terrible hot takes on websites for another decade. And a few disappointing sequels.
The Lord of the Rings: Return of the King
Tough to pick between this or the first film in the trilogy. The first film proved the unfilmable was filmable, and was a tour de force for sheer production design detail. But RotK was the barnstorming bookend that went from emotional strength to emotional strength, as an epic journey of tangible friendship came to a close. There were, if anything, too few endings.
Mad Max: Fury Road
The ultimate thrill ride and so far beyond what nearly every other action director has been capable of last decade it actually hurts. In a decade dominated with superhero movies where action forms the template for most of their narrative drive, all are put to shame by a film that is literally driven forward in a cacophony of breathlessly propulsive character motivations. It throbs, it thunders, it punches you in the gut and dazzles the senses.