The Matrix, but not because of the movie itself.
I rewatched it a couple of weeks ago during a Fathom Event for the film's 25th anniversary. The movie still holds up (arguably even moreso now since it's all about the dangers of an AI takeover), but a lot of its impact is diminished because so many movies in the 2000s tried to rip it off. I imagine younger viewers seeing it for the first time the way some people view Superman, Seinfeld or classic Simpsons--groundbreaking for their times, but so many imitators that make it harder to stand out as time goes on.
Plus the fact that the whole red pill ideology came from this movie
though in hindsight it's hilarious that all these so-called 'alpha males' based their whole personality on a movie by two trans women