The Greatest Shojo you've seen

Without a doubt, Revolutionary Girl Utena. I don't delve into shoujo very often, but Utena is amazing. More recently I watched Ouran High School Host Club, which I'm pretty sure qualifies as shoujo. It was really good up until the end, or rather, the lack of an end. It felt like one of those "read the manga" endings I can't stand.

I'm going to go on a whim here and say Bokura ga Ita. I've heard a lot of people hate it but I can't stand to love it. This is one of those "read the manga" ending type of thing (I did read it too) AkuTenshiiZero just mentioned but holy crap. I cried and was angry many times.

Kamisama Hajimemashita and Kaitou Saint Tail <3 aswell as Kaichou wa maid sama, Gakuen alice, Saiunkoku Monogatari and Yumeiro Patissiere.. Shoujo animes will forever be among my favorite genres.. if not the fave....