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.
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
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
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.