I already shared that I like anime a lot. So it won't come as a surprise that my favorie movie of all time is Makoto Shinkai's
5 centimeters per second . But let's not digress into talking about animation.
I mentioned several times that I love Richard Linklater's Before-Trilogy with Julie Delpy and Ethan Hawke. Especially Before Sunset resonates a lot with me. In general, even if you have no interest in the subject matter of the films, watch them for the dialogue alone. Yes, the dialogue is written for film and not a book, but I think you can nevertheless learn a lot from it.
Boyhood is another Linklater film that I find interesting. It was filmed over the course of 10+ years or so and shows the actors aging in real time as the story progresses, especially the child actors.
Another film with Ethan Hawke that I simply adore is Gattaca. Also, the film soundtrack by Michael Nyman is extremely underrated in my opinion. I could listen to The Other Side over and over again:
https://www.youtube.com/watch?v=WlsZJCflrhs
The Lord of the Rings movies left a huge impression on me as a child and I think they hold up extremely well. But that might partially be nostalgia goggles clouding my assessment.

My mother bought the books for me as a child. I think she expected them to be children's books like The Hobbit. And when little Claire finished reading them it just so happened that the final movie in the trilogy hit the big screen. So I forced my parents to watch the first two movies on DVD with me and then dragged my father into the cinema with me. I remember him being confused by the ending and me explaining it to him. Looking back, that must have been very cute from an outsider's perspective.
When I think of more recent films... hmm, I agree with
@AdmiralPiet that the Star Wars sequel trilogy was a mess. I think I've also switched to watching series like The Pitt more than movies. I like watching the newest episode of that show each week a lot. Although, recently someone pointed out to me that one of the actresses on the show looks like she's the sister of German politician Philipp Amthor and now I can't unsee that.

I could have done without that image in my head.