Anime

Lots and lots of them...

Some that come to mind:

Mushishi - it just doesn't hold my attention, which is actually sort of okay, since it's episodic, but means that it lingers as TBW. I'm up to episode 5 ATM.

Tatami Galaxy - I generally love Yuasa, but I just keep bouncing off of this one. Mostly it's that it's an odd sort of "tell, don't show" spin on storytelling, and the narration is not only so constant, but so fast, and it's just sort of exhausting.

Haibane Renmei - It's strange enough and slow-paced enough that I'm going to have to be in exactly the right mood to appreciate it.

The later seasons of DanMachi - When I first watched the series, there were three seasons out, but by the time I made it through season 2, I was exhausted. The villains are just so villainous and so immensely powerful and Bell is so earnest and slow to grasp the real nature of things that it was both suspenseful and frustrating, and I just couldn't work up the initiative to dive into season 3. And I still haven't, and have since fallen even further behind. But someday...

The later seasons of Re:Zero - the first time through, I made it most of the way through season 1, and just hated Subaru so much I had to walk away. Then I learned that that was a not uncommon reaction, and saw lots of claims that you just have to stick with it, so I went back and watched the rest of season 1, and ended up still hating Subaru. It's not just that he's so often weak - I can understand that. It's that the only way he seems to be able to counter that weakness is to jump all the way over to being a self-absorbed asshole who doesn't listen to anyone. There's a middle ground there where he'd listen to people and take their advice and make considered decisions and carry through with them, but he skips right past that, so he basically alternates between being a weak and foolish asshole and being a self-absorbed and willful asshole. But I love the concept and most of the rest of the cast (and especially Emilia), and I can't imagine that Subaru keeps failing to find that middle ground through so many successful seasons, so I keep wanting to give it another chance.