-Attack on Titan
-Hetalia (I'm a little late XD)
... Is that it? I think so.
I definitely recommend reading the manga if you like Hetalia anime (or even if it leaves you cold but are willing to give it a second try). A lot of the material was released via the author's blog and never made it into the anime or the printed version of the manga. I can point you in the direction of scanlations if necessary.
Sorry if you already know this - it's just that I love the comics, and Hetalia is actually my main fandom, but the anime didn't really do anything for me!