These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Accidental Innuendo: When the dwarfs meet Snow White for the first time, Grumpy tells Doc to "Ask her who she is and what she's a-doin' here!" Of course, given his tendency to get words mixed up, Doc comes out with "What are you and who are you doin'?" Surprisingly enough, given the time period this film was made in, this is probably one of the earliest examples of this trope.
Also, The Queen: Unrepentent and valuing being beautiful over the life of her own stepdaughter, or an extremely dark Woobie, Destroyer of Worlds (to Kefka levels) who, after being reexposed to mental anguish caused by her father regarding not being beautiful at all and an extremely low self-esteem left her so broken and insane that she felt that killing her stepdaughter was the only thing left to match up to her abusive father's standards of beauty. The Book "Fairest of All" seems to nudge to the direction of the latter.
Every song in the movie counts, but Some Day My Prince Will Come is a standout. Its impossible not to get chills when the melody kicks in as Snow White wakes up at the end.
Big Lipped Alligator Moment: "The Silly Song" segment slightly justified in that they are celebrating Snow White and it leads to them wanting Snow White to tell them a story leading to one of the most memorable songs ever (Someday My Prince Will Come).
There was a segment planned where the Dwarfs have soup after washing their hands and sing a song about... soup. If it had been put in the final product, it would have qualified for this trope!
The Tree hallucination; it's quickly forgotten after Snow White finds her little forest friends.
Ear Worm: "Heigh-ho, heigh-ho, it's home from work we go..."
Ensemble Darkhorse: Dopey, particularly around the time the film was originally released. Many predicted that he would become as big as Mickey Mouse and Donald Duck. It didn't quite turn out like that, but still, to think that it might have is impressive.
Dopey was, in fact, the initial choice for the apprentice role in the Sorcerer's Apprentice sequence from Fantasia. He was replaced because Donald was the public's favorite Disney character at the time, and Walt Disney wanted Mickey back in that seat.
Grumpy seems to have amassed a big following in recent times, to the point where a reasonable amount of merchandise is dedicated to him and his sourpuss attitude.
The Dwarfs in general are this, being distinct in personality and very humorous as well.
Evil Is Sexy: The Queen, until she transforms herself into the hag.
Growing the Beard: This marks Disney's change from whimsical cartoons and into the full length, animated film genre capable of telling a longer, more complex story , not to mention the animation quality is a drastic improvement of the previous shorts.
Harsher in Hindsight: Snow White wonders if the seven "children" don't know how to clean because they don't have a mother and are orphans. While saying how awful that would be, a fawn nuzzles his mother.
Moral Event Horizon: Oh dear god... The Queen definitely crosses it: She wants to kill an innocent girl (who is probably 16 or less) and for what?!? Just because she's more beautiful than her. And if that's not enough she plans to poison her with the Poison Apple making her fall into the Sleeping Death hoping the dwarves will bury her alive.
And it was also originally planned that she tried to force the Prince - the guy who loved Snow and who Snow pined after - to marry her. And when he refused, she would try to drown him in the dungeon.
The Queen crossed it long ago when she hired a huntsman to try and kill Snow White. How? Because she tells the hunter that in order to make sure Snow White's dead, she asks him to cut her heart out and put it in a box to present her with! And remember - this is her stepdaughter we're talking about.
Nightmare Fuel: The fact that Snow White herself looks and sounds no older than 14, and the prince's voice places him as quite a bit older than that. Suppose we should be grateful she's not 7 as she is in the original...
It's only Nightmare Fuel if you don't know the time period. Getting married at 13 or 14 would be perfectly normal for the Middle Ages. Having a marriage arranged from when a child is born wouldn't be that odd, either.
The Queen's pet raven perched on a skull appears just in one scene.
Seinfeld Is Unfunny: Virtually any scene of significance in this movie has been copied, homaged, parodied and ripped off incessantly for over 70 years. Best advice to parents is to show it to the kids quickly.
Tough Act to Follow: Very few of the animated films made during Walt's lifetime were as successful.
Ugly Cute: The dwarfs aren't exactly lookers, but they're just so genial, charming, and eager to please that it's hard not to love them.
Uncanny Valley: Even back then, everyone loved the cartoony dwarfs and noted how stiff and wooden looking the rotoscoped human characters were.
What Do You Mean, It's Not for Kids?: Possibly the Ur Example. In fact, Walt never intended "Disney" to become synonymous with being kid-friendly (family-friendly, yes, but not kid-friendly. "Family-friendly" implies that it's adult, but still respects its child audience by not going too far). Animation was just easier for all the detail he wanted to include in the story.