There are several that I really like.
OP/ED of Buranki. The songs are good but what makes them really pop is the awesome direction.
OP/ED of Pandora. They just feel really special to me, especially the intro of the OP. Again, just good songs but great direction.
Utawarerumono 2nd OP. Great music and visuals that give you a a strong connection to the characters and the story.
OP of Dimension W. I love dancing in OP/EDs so this one is striking. Music is great as well.
OP of Shouwa Genroku Rakugo Shinjuu. Perfectly fitting to the anime and the time period it plays in.
Dagashi Kashi ED. Again, I love dancing in EDs so this is awesome especially since both of them are some of the best female MCs ever.
Honorable mentions to Ao no Kanata because they managed to give us new songs from both Mami Kawada and KOTOKO.
Also kudos to the OP of Konosuba that shows that a big part of their inspiration for the anime comes from Dragon Quest.
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