In no order, off the top of my head so I'm probably forgetting a few but these are ones that stand out for me:
Gandalf and Frodo's talk in Moria during FotR. Underlines so much of the what the story is about and why its one that has inspired tenerations and will continue to do so. The franchise has so many though hard to chose but thats my favourite. Second is at the black gate: "For Frodo."
Jack Sparrows entrance in Curse of the Black Pearl. Probably one of the best character intros and all without words.
Children of Men when the soldiers hear the child crying.
Forest Gump talking to Jenny's grave and talking about the sunset he saw while running and wanting to share it with her.
When Kiki asks her father to pick her up like he used to when she was a little girl from Kiki's Delivery Service right before she leaves home. So real, so genuine and so touching it makes me tear up everytime I see it. Ghibli has so many like the train scene or Haku's name scenes from Spirited Away, Totoro at the bus stop, Sheeta and Pazu spinning each other around in joy when they reach Laputa, the grandfather remembering the Baronness in Whisper of the Heart. Too many to chose from so I went for a lesser known one.
The ending to Your Name. So emotionally and visually charged and a perfect ending. When they see each other on different trains and when Taki finally speaks, oh man I was losing it.
When Simba reclaims his place as King and the rain washes away everything.Probably my all time favourite Disney scene. Second place is Whole New World or At last I see the Light.
Paddington 2 when they escape from jail. Pure whimsy and childlike delight, perfectly capsulating a family movie and its innocence.
Luke Skywalker gazing out at the binary sunset in ANH.