pretear opening PRETEAR OPENING I didn't even finish the anime (coughhhh the manga was better) I just love this song so much
https://www.youtube.com/watch?v=Zz_Nq12SAeU

Gotta love the DNAngel op, oh man high school is flashing before my eyes
https://www.youtube.com/watch?v=UU0T6-iduoE

Sugar Sugar Rune's song is really fun and the tune was based off of a Eurovision winner from the 60s, "Poupee de Cire, Poupee de Son"!
https://www.youtube.com/watch?v=9ckBDd11OJY
The Korean op was really cute too ;3;
https://www.youtube.com/watch?v=Zqdkhc8WRkA

I can't decide between my two favorite Genshiken ops, I love the first because of the way the animation matches the beat:
https://www.youtube.com/watch?v=_CgcgckUflQ
But I also love the ova's op because of the song, the easter eggs, and because the animation matches the manga better:
https://www.youtube.com/watch?v=EzptQtXOPJg

I think I'll stop there, I could ramble about Stuff I Watched A Lot In High School all night, man