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.
Crowning Music of Awesome: The Mexican Standoff, tension, confusion and paranoia reach their climax as a pained gargle and the first notes of Dimmu Borgir's Puritania signal everyone to drop what they're doing and Back to Back Badass their way out of an enclosed gladiatorial arena filled with Wall Crawling zombies. To emphasise - This Troper isn't even a metal fan and he still gets tingles down his spine talking about it.
This scene also probably has the highest concentration of CMOA's in the whole series.
At one point Mullins falls off and cliff and survives. He then monologues completely straightly that it's "not like the worst day of his life". Okay... So... WHAT THE HELL WAS THE WORST DAY OF HIS LIFE?! How bad could it have been compared to being in a Genius Loci/Eldritch Location?
Growing the Beard: The first episode had no story and poor animation. The second episode had better quality animation, but still not much of a story. Then, Castle 3 burst in with even better animation, a story, and a fully voiced cast. Castle: Repercussions upped the ante even more.