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: Wristcutters: A Love Story
Angst? What Angst?: Mostly. The people are somewhat bitter, but not very angsty for people who committed suicide.
Ear Worm: When there is trap laid out for you/In every corner of the room...
Fridge Brilliance: Zia doesn't find his ex girlfriend until after he has fallen in love with Mikal - it couldn't happen until he no longer cared.
Special Effect Failure: The black hole in Eugene's car. They didn't even manage to incorporate it into a shot of the actual interior of the car. Also it looks like it was knocked together in 1992 in fifteen minutes on some dodgy freeware by someone who'd never animated before. Also applies to the color-changing fish.
Squick: Most of the suicides are seen in their full glory, starting off with Zia cutting his wrists on camera.