Calling All Manga Fans

I've read more Manga than you'd think, since I never really post anything about Manga here, but I still feel 95% ignorant when it comes to making recommendations. I can tell people what I've liked, but what merit do my suggestions have when I've only read 20 Manga series and there are thousands more I haven't read?

And since I'm presenting a workshops for librarians this fall, I want to make sure that I have some Manga in the mix. (The stuff I'm presenting is American-centric, which is fine for the topic, but I want to include Manga information as well.)

So, all of you Manga fans -- or anyone, really -- I need your help. Comment below and tell me five or ten Manga titles that you think belong in American libraries.

Your reward is making the world a better place. For Manga.