Wow an F? Sounds terrible. I still am yet to see Paranoid Park, but hopefully that'll change soon.
I watched Zombie Defense Army (2005) which as far as I can tell was my first Japanese zombie film. The film begins with an anti-American tirade about war attrocities and the current Iraq situation then we go to the low budget horror films favorite locale, the woods. A poorly animated UFO crash lands and releases a gas that sure as **@# causes the dead to come back to life. It just so happens that there's a random woman hung from a tree and someone who crossed a yakuza getting shot right before this mysterious green gas is unleashed. They become the first zombies then a bunch of random people start rising from piles of dead leaves. So quickly a blonde yakuza with a mullet, a very spoiled model/pop star, and a military patrol survive and band together to fight everyone. Nearly everyone dies, a four month old fetus jumps out of it's dead zombie mother and it is nearly impossible to definitively kill any of these zombies. The continuity is all over the place, many of the effects are horribly bad, and the story is laughable at best. As far as gory retarded entertainment this will deliver, but in terms of making its mark on the lexicon of zombie lore this film is far from a classic. There is a way of tying things together and despite some choppy moments everything does seem to eventually come together and even when you feel like certain characters or subplots were forgotten about, they come back around again.