Yep. Just watched the OVA; it wasn't very good and was just an abridged and mangled 11 minute version of the manga. The only good thing about it was seeing HoiHoi-san animated, I guess.
There's an official English release of the manga, apparently, but it's a bit strange; The cover is identical to the Japanese one (which is probably why it escaped my notice) and the translation is very sloppy. It was apparently published in English in 2007, three years after its release in Japan.
The manga's just a single volume, by the way. It's pretty funny, you should check it out.
Only up to Vol. 8 so far. It's still ongoing, or at least I haven't heard anything about them canceling it.