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.
YMMV: The Invisible
BLAM: The final scene is pointless and makes the film a lot more depressing.
Nightmare Fuel: How would you like to be a disembodied spirit who can be heard only by someone who tried to kill you, knowing that you're dying, and watching everyone around you fall apart because they think you're already dead?
Tear Jerker: Oh, so many. Nick's mother realizing she didn't actually know her own son. Nick's mother breaking down at her desk. Annie looking through Nick's things. Annie saying goodbye to Victor. Annie finally getting to Nick's room at the hospital. The epilogue.
"I Will Follow You Into the Dark". Full stop.
Wangst: Part of Nick's character development is discovering that he's not the only one suffering, and other people have it worse.