User blog comment:Ncduru/Greatest Anime Openings/@comment-4449950-20160325020213

The best OPs mix awesome music and animation with themes that suit the series in question. With that in mind:
 * Black Butler Book of Circus - perfectly styled to the theme of the arc with creative and stunning animation to boot
 * Kamisama no Inai Nichiyoubi - sung by Cana's VA and absolutely stunning
 * Fate/Zero OP - awesomesauce
 * Too many FT OPs to mention
 * Another - creeeepy~
 * Shigatsu wa Kimi no Uso - so pretty and the song is amazing
 * Barakamon - so amazing. Even better when you understand the lyrics
 * Steins;Gate - that chorus
 * Akatsuki no Yona OP1 - the best lyric-less anime OP imo
 * Gekkan Shoujo - omg XD
 * Both AoT openings. Made the anime 20x better
 * Durarara! OP1 - hnnnngh!
 * FMAB OP3 - gunna get shit for this, but OP 3 is the best XD So much symbolism with the white flowers and the song is awesome
 * Baccano! - tell me if you've ever heard a better jazz opening in anime~
 * One Punch Man - ONE PUUUUUNCH!
 * Darker than Black - damn
 * Gundam00 OP3 (S2 OP1) - so cool
 * Death Parade - *dance dance dance*
 * Gugure! Kokkuri-san! - Never laughed at an OP so much XD
 * Both Vampire Knight OPs - shit anime, but great OPs XD
 * Amnesia - see VK reason XD
 * All Soul Eater and Soul Eater NOT! OPs - because they are all amazing
 * Gangsta - Why did this anime have to suck?? ;__;

I could go on, but this is a long list already .-.