Don't know if they're the best, but when I think of eyecatches I think of Cowboy Bebop. I also like the ones in Patlabor. Shout out to FMA Brotherhood with the guy saying "FULL METAL ALCHEMIST" really weirdly.
Gurren Lagann
A Place Further Than The Universe is one of the most visually stunning shows for me. Its backgrounds are amazing. I should rewatch it soon.
Lycoris Recoil is my vote as well. As an aside, I recently started watching Zombie Land Saga and learned that the eyecatches of the girls posing with things are actually products made in Saga prefecture. Anyway, LycoReco's eye catches are great.
KonoSuba is worth mentioning. The "KonoSuba" voice line always has something to do with what the characters were doing/feeling right before the break. Like if Aqua did something cheeky the story, she would say "KonoSuba" in a cheeky voice.
Man I'm not super Into fashion but call of the night had some great ones.
The Digimon 01 eyecatches are pure nostalgia for me, they're the only ones I really remember too well. It's probably because of the catchy music.
Anime
Anime is hand-drawn and computer animation originating from Japan.
Anime; the one thing that gets us closer to each other and brings us together.
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