I was born in 1970, so didn't grow up with easy access to movies. When we went to the cinema it was a big deal and certain movies seemed to get played on TV about once a year. I can't remember really being impacted by many.
I loved Rikki Tikki Tavi and Charlotte's Web (the old animated version). I saw most of the Disney animated movies that were out at that time in the cinema. I learned that I hated trippy scenes like the drunk scene in Dumbo and pretty much Fantasia and Alice in Wonderland in their entireties. I also hate Pinocchio because he was disobedient to his father and ended up causing himself and his father a lot of hardship just because he was an idiot.
I did have the unfortunate experience of seeing Poltergeist (friend's mom took us to see it for her birthday). I was already afraid of clowns and that movie made it about a hundred times worse.
Of course, my teenage years happened during the eighties and I love a lot of eighties and eighties-style movies, but none really stand out as far as impact.