"What does Interesting mean to me? It means that it seems to have sprung from a genuine artistic impulse, and has the sense of somebody really and truly wanting to communicate something through the medium. This being different from simply trying to make a series popular, visually spectacular, emotionally evocative, intellectually complex, or even just dedicating yourself to making a series 'good.' This is why the accusation that the art style was "a mess" at that time doesn't bother me; it was a transition state, but some roughness of execution does not condemn something that has this genuine core (and a fine finish certainly cannot compensate for its lack).
Now, being able to judge Interesting is, of course, not some simple deductive process. Art criticism never is. All I can say is that in my experience there is a certain cohesiveness to them, like you can tell there are more threads tying it together than are readily apparent. There is also often a type of individuality, where the conclusion, the moral, the story, the execution... it is somehow quirky. Not necessarily radically novel but not quite what you would expect either, with some of the interpretation being clear and others parts requiring further thought . You can't just fall back on the common patterns ('tropes') to easily figure out what is being said, but it is not random; just at the edge of intelligibility. And ultimately, there has to be some quality to the insight being conveyed; the topic can be completely mundane and still be compelling, but if coming from an utterly banal mind it's going to be dim."
Above is a reply I made in a short discussion concerning why I valued anime of the early 2000s rather than of the last decade. That topic itself isn't of particular interest to expand on here, but what is interesting is Interesting.
I'm always on the lookout for things that are Interesting. I guess it's just my own way of saying I'm looking for things I think contain genuine artistic quality, although I try to avoid those words themselves because people tend to feel they know what they already mean and have firm views on them (or their non-existence). Capitalizing an innocuous word seems to do well; it's like inventing a new term, but is less taxing on the reader while still preventing old views from leaping in immediately. It also makes it a proper noun, and a subtle emphasis on how important I view it to be.
But beyond the above, I wanted to jot down a side thought I had after writing it. Why would Interesting things be a little quirky? Is it just because they are genuine expressions of individuality, and therefore necessarily different? I think that's part of it, but I also have a guess that perhaps it also involves the nature of art.
If art is to communicate anything, it has to speak a language, as it were. The more shared that language is the easier it is to reach a wider audience, and indeed that's what cultural traditions help supply: a structure that helps artists frame their ideas and patrons appreciate them. However, the problem is also that languages are by their nature limited, and while artistic languages may have the power to convey more than semantic content can, they too will only be able to do so much.
What it seems inevitable to me, then, is that anybody really seeing to express something will discover that they have to wrestle with their chosen medium and its languages to find out how to "translate" themselves a little. If a work is entirely derivative it can be adequately expressed by the common language; no struggles or modifications are required. On the other hand, a made-up personal language may be supremely expressive... but is largely indecipherable; maybe it's art for the artist, but for the rest of us it's scribbling. There's a fine line in there where the necessity of trying to find the right way to express something as a unique individual with a worldview worthy of expression forces the work to be just a bit quirky.
This is assuredly not a new idea out there, but I have yet to read it so I can claim it as my own for now, and leave on looking for things that are Interesting.