Wow, some harsh comments in here..
I really enjoyed the Haru OVA...not for the unsurprising fanservice, but for the surprising amount of character personality that they were able to cram into such a short time. There are tons of humorous moments between all the members of the class. The animation and character designs are really pleasant. I'm sure I'll like it even more if/when a subbed version comes about, though I was able to follow most of it with my meager Japanese.
The sky diving scene wins. I could watch it over and over again. Damn, I love these characters!