Before the movie proper begins, there's this dedication in between the title card and the opening credits:
My sincere appreciation to the members of my staff whose loyalty and creative endeavor made possible this production. —Walt Disney
Snow White's innocence, kindness, and purity is very heartwarming. She doesn't say an unkind word to anyone, asks that the Dwarfs be blessed for being so kind to her, and cleans house and cooks for them simply because it's the polite thing to do. And her friendship with the animals pays off when they lead the Dwarfs to rescue her.
An unsung lesson the film teaches is tolerance. The movie was made in the 1930s and set even earlier, but not once is Snow White prejudiced or frightened of the Dwarfs. She treats them as men and equals, and asks that they be blessed for being kind to her in return.
If you listen to the lyrics of "One Song", they're really sweet and romantic.
One song, my heart keeps singing Of one love, only for you.
"Some day, my prince will come, Some day, we'll meet again." And by golly, he did.
The scene where Snow White helps the little blue bird.
And the reveal that all the frightening eyes a crying Snow White saw in the forest? Harmless woodland animals, who come out to greet her when she is at despair's door.
The fact that, of all the dwarfs, it's Grumpy that leads the charge to avenge Snow White against the Queen.
Grumpy turns out to be very affectionate with Snow White, and it's beautiful.
The huntsman deserves a heartwarming moment. He's put in a position where he must either kill Snow White or face execution. He makes sure that her back is turned because he doesn't want to look her in the eyes. To top it off, when she catches him trying, the second he looks at her scared face, he drops the knife and begins sobbing, begging for her forgiveness, warns her that the Queen is out to get her, and tells her to run for it.
The scene when Snow White and the dwarfs are sleeping, and a fly lands on Sleepy's nose and sleeps on it with a buzzing snore. It's so cute, it may double as a Funny Moment.
Snow White is seen making a pie for Grumpy right before the Queen shows up.
The Prince kissing Snow White to awaken her.
After the Prince kisses Snow White, he kneels by her coffin and lowers his head in despair. He himself had no idea his kiss would wake her up.
The morning after she moves in, Snow White tells each of the dwarves good-bye as they leave for work, who all warn her to be careful, and she promises she'll be fine. Grumpy, who has acted nothing but annoyed and made it clear that he hates having her around since he first met her, is last.
Grumpy: Now I'm warning ya'...don't let nobody or nuthin in the house! Snow White:' [smiling] Why, Grumpy... you docare...
And afterwards, he walks off in a huff, but in the midst of doing so turns almost back to Snow White with a smile on his face.
The night before, Snow White says a prayer, and at the end of it, she asks for Grumpy to like her. Even after all the crap that he gave her up to that point, she was willing to forgive him if it would result in them being friends. In the end, her prayer was answered.
Doc comforting Dopey during Snow White's funeral. Especially when you look at all their scenes together and you notice that up until this point, Doc hadn't been exactly nice to Dopey.