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.
Award Snub: Nominated for eleven Academy Awards and won nothing; even worse, Steven Spielberg went un-nominated for directing. There was a lot of speculation that it was a deliberate snub out of pure spite, after he showed he could make an Oscar Bait movie and still make just as much money as his previous work.
Dancing Bear: The book at least is of arguable quality, but is used extensively for its subject and not its content.
Ho Yay: Celie and Shug, though in the film version, this was regulated to subtext.
Memetic Mutation: Not in a funny way, but the "All my life I had to fight..." quote from Sofia is one of the lines that people remember.
Moral Event Horizon: Pa is well beyond this at the beginning of the story, given how he has abused the sisters and used them as his own sex slaves. He forces himself on a series of other girls too, and dies a Karma Houdini. Fortunately he wasn't their real father.
Mister appears to cross this with his horrific and systematic abuse of Celie and his banishment of Nettie, but this turns out to be a subversion, as he does the right thing by her at the last moment by paying for her family to come back to her from Africa.
Narm: You feel sorry for the girl, but then picturing the situation and how much of a bastard Pa was, you start laughing.
Celie: You his wife? Teenage Widow: Yes, Ma'am Celie: How'd he die? Teenage Widow: On top of me.
Considering how often he raped Celie, and how he went through so many wives (basically forcing himself on THEM too), it also counts as Death by Irony.