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.
Awesome Art: The thing almost everyone seems to agree on with this movie (even people who hate Adam Sandler films) is that the animation is really freaking good. It's more fluid and well-done than some Disney films.
Base Breaker: Whitey's voice. While most liken it to nails on a chalkboard, others are more forgiving because Whitey is just such a Nice Guy.
Darkness-Induced Audience Apathy: The only reason the townspeople are so awful to Whitey is to make Davey look better by comparison and Davey himself is so unabashedly nasty that a good amount of viewers really don't care whether or not he gets better.
Ear Worm: Similar to Awesome Art, even people who don't like this movie (or Adam Sandler in general) have admitted that the songs are pretty catchy.
One of the biggest criticisms for this movie was how Davey does not deal with his loss the way most people really do, and rather than be introverted and antisocial is a troublemaker. Years later, Adam Sandler would star in Reign Over Me, one of his few dramatic roles where he was hugely praised for his sincere portrayal of someone who lost their whole family to a tragedy.
Jerkass Woobie: Davey, after you learn that his parents died when he was a boy. On Hanukkah, when they were on their way to watch his basketball game. Which, before he learned of their deaths, he worked himself to the core winning as a tribute to not only his parents, but to the parents who always came to watch their kids play basketball... despite the fact that they never win. Hoo-boy
Non Indicative Name: Despite having a few references to Hanukkah, the film has little to do with the eight nights of Hanukkah and is more of a buddy comedy (and the year the film was released, Hanukkah began four weeks before Christmas).
Tear Jerker: Davey's past and possibly the mall scene where he finally reads the Hanukkah card his parents where going to give him before they died. Or at least, the flashback could have been a Tear Jerker if it were not for the Vocal Dissonance of the scene being narrated by Whitey.
What Do You Mean, It's Not for Kids?: Yes, it's an animated wacky holiday musical rife with toilet humor, but it is most definitely not for children, what with the focus on deer shitting lots of poop. Doesn't help that in Canada, the movie's rated PG. 14A would have been more like it.
This is also not entirely unjustified either. As with most Adam Sandler movies, the juvenile humor and schmaltzy drama, as well as the inability for scenes to make up their minds whether they're funny or serious, won't really appeal to anyone over the age of 18, so it's not for kids or adults as much as preteens.
The Woobie: Whitey, whether you like him or not, it is sad to feel like you don't exist by having someone you've been trying to make into a better person tell you so.