The end theme for black lagoon still occasionally gives me goosebumps, I think it’s how atmospheric it is and somewhat calm/sad after the chaos of a typical BL episode. That I never saw the end of the outro until my second watch and always assumed it was her walking to her death after a firefight.
Steins Gate, Psycho Pass, Tokyo Ghoul, FMA, Death Note, Cowboy Bebop, Space Dandy, Vinland Saga, Soul Eater, 91 Days, 1st OP of Food Wars, and I’m sure a few others I’m forgetting.
Code Geass almost makes the cut, but I usually end up skipping it eventually.
I've liked a lot of openings but usually end up skipping eventually, the only one I can think of I wouldn't was Death Parade, it's too much of a banger
All of them. I only watch shows with absolute banger openings
There are a few that transcend that, and became the reason I would watch multiple episodes at a time. All intros for Steins;Gate, Durarara, Kaguya-sama, and Nichijou are the best of the best
EDs: Samurai Champloo, SpyxFamily, Kekkai Sensen, any psychological/philosophical show (like Psychopass and Death Parade) because I'm having a wtf moment anyway and need it to wash over me.
I'll admit to skipping most after a few episodes or if I'm in a marathon, but I love the intro to Vivy, don't think I ever skipped that one, nor will I when I rewatch that..
Made in Abyss because again, the music is awesome (big Penkin Fan), Bepop and Champloo I tend to watch every time too. there are probably tons of others but I cant remember everything cause my brain is mostly made of mud these days.