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.
For Gardener, the Tommyknockers cross it, when he finds out what's in Bobbi's shed. They keep people locked up in shower cabinets filled with some green liquid, attach cables to their brains, and suck the energy out of them; a long, incredibly painful process. He's especially freaked out to discover Bobbi's dog also hooked up.
In the miniseries, Becka's cheating husband has one after several earlier petty Kick the Dog moments: he leaves early from a search for a missing child to go sleep with his mistress since he knows that the search will keep his cop wife occupied. Read that again. He abandons a missing child to go cheat on his wife.
Narm: The scene in the Vet's office in the miniseries. It would've been alright in itself but the people waiting for the Vet had a Komodo Dragon, a Cobra and an Owl. It comes off as more silly than dramatic.
Also, the scene with the writer throwing himself off the balcony. The Nostalgia Critic even remarks that it's like the ending to a Goofy cartoon.
Never Live It Down: The only thing that anyone can ever remember about Gardener is that he shot his wife. Never mind that it was non-fatal, she didn't press charges, or any other thing he's ever done, all that important is that he shot his wife.
Well, having shot his wife is a pretty huge indicator as to what kind of person he is under the surface, when alcohol lowers his inhibitions. Just because Gard is the protagonist of the story doesn't mean he's a good guy.