A few VERY different ones:
Chinatown - I read a book a few months ago about Robert Evans, Chinatown and the undoing of "Old Hollywood". That era fascinates me. I hadn't seen the movie in probably 20 years and it didn't speak to me at the time, so I went back to it. This may be a controversial opinion, but this movie is damn good. Definitely better than any movie about water rights has any right to be. Nicholson in KING mode.
Drop - Had good reviews, so gave it a shot. Really enjoyed it for what it is. Definitely a throw back to the 50 movies like this in the 90's. Some of the tech stuff was a little clunky, but the tension builds well and it moves at a good clip. Very Hitchcockian feel. Megan Fahy is great and I hope she gets more shots. Sort of a random thought, but the opening had a very classic opening credits sequence that has gone out of style. The opening credits for something like Fight Club is still seared into my memory and I miss those.
Magnolia - I started a PTA rewatch and got to this one. I don't think I have seen it since the theaters. It is still overlong and confounding in parts, but there is so much good in there. Easily the best performance of Cruise's career. The close of that section is just devastating. He could have easily cut the quiz show parts, and possibly Julianne Moore (bless her) and saved time. I love that late 90's Aimee Mann era and her songs fit so neatly with the movie. It is crazy that a 29 YO PTA was able to so clearly convey regret and the resulting pain from the actions of parents. A worthwhile near miss.