Oh, i could find you LOADS of Harry Fanfic.

The only things more prevalent than Harry-Snape (hero and the coolest antagonist ever), are Harry-Draco (hero and antihero) and Hermione- various (like Smurfette, one of the few females in sight with more than two lines gets a lot of attention)

Hermione/Harry
Her/Harry/Ron
Her/Snape
Her/Draco
Her/House Slytherin
Her/Her(/Her?) (Hermione finds her magic clone/double/time traveled self(selves) strangely compelling)