I have not watched all the good things, but I am trying. Maybe I'll see them all by the coming of the next century.
Here is my tier list as to form a comprehensive idea of what is good and what is bad. In a shorter version, anything above a 5 is a positive review in some form, anything below is leaning on negative. These are not objective statements of quality, I am of the belief that there is no such thing, but they are how I subjectively felt about shows.
It's important to be honest with yourself when reviewing and to see what kind of shows left the greatest impact, regardless of specific quality. If I walked out of a show feeling impacted as a person, and still remember it months later, it is probably a 10/10. If I walked out feeling nothing except ambivalence and a slight feeling of happiness and go on with my day, expect a 6 or 7.
Enough waiting, you probably skipped this anyway, here is the scale.
10 - Shows that resonate with me at such a perfect level that it overcomes any problems or even doesn't have many of note. These shows have to have an effect on me or stand firm in my positive memories. (Steins;Gate)
9 - A show I consistently enjoyed, maybe even loved, but just isn't as memorable for me as a 10/10. This category is essentially for my shows which could have been 10/10's, but just didn't connect with me enough, or had a problem or piece of the story that held it back. (Fullmetal Alchemist Brotherhood)
8 - These are essentially a weaker 9. A show is still probably good, but it is starting to delve into more forgettable territories. I may remember it fondly, but it's probably after looking at my completed anime list and seeing it. (Parasyte: the Maxim)
7 - This is when shows are kind of a chore to watch, or just have a few too many problems. Things that were boring despite being good in many parts go here as well. (Ponyo)
6 - This is for shows that were overall mediocre and had a myriad of problems. Usually what keeps them from falling lower is the fact that they had a few great scenes or aspects that keep them here. I might have also found them just boring or slightly annoying. (Fireworks)
5 - These shows sit at the middle of everything. All of their positives and negatives balance out to a flat meh. I might have liked pieces of it, but dammit if I didn't hate myself while watching some of it. (Fairy Tail 2014 + Dragon Ball GT)
4 - These shows are not... awful, but by no means are they anything to write home about. I usually forget it exists, or just feel lukewarm towards it. This is the first real negative rating I'd give a show. (Fairy Tail)
3 - These shows start to offend me a little. Most of the memorability of shows go on a bell curve, I remember things more if they are extremely bad or extremely good. These shows are forgettable and/or bad. I'd never choose to watch them again. (Psycho-Pass 2 + Steins;Gate 0)
2 - If a piece of media reaches this point, I probably was completely bored or annoyed at something in it. I already begin to hate the shows sitting at 3/10, so one can only imagine my distaste for something down here. (Fairy Tail The Second Movie: Dragon Cry)
1 - There is a special place in hell for this offensive piece of garbage. (Ichigo Chocola Flavor)
100th Anime: My Hero Academia The Movie: Two Heroes