Should this movie be described as a Hong Kong take on Dawn of the Dead? No. Return of the Living Dead? No, certainly not. Mallrats with zombies? Sounds better.
The point of this movie is not to provide stark raving terror, deep social commentary, or five gallons of blood per second. This movie is fun. Follow the lives of a pair of small-time punks running a VCD shop, the likable Crazy Bee and the incredibly named Woody Invincible, as they try to get their boss's car and end up accidentally unleashing a zombie plague. Oops. But even before the first zombie shows up, the duo has gotten into some amusing scrapes and got out of them with bluster that for once is not unlikable. They may be jerks, but at least their the kind of jerks you can see yourself hanging out with.
When the zombies show up, the movie stays focused on Woody and Bee. It seems so wrong to say that this movie is character driven, but it is. Not it a dramatic sense, but in the sense that the characters and not the zombies are the main focus of the movie. That surprisingly doesn't hurt the film, as the interactions are definetly between our heroic duo and the zombies are generally amusing.
But the movie knows when to get serious. The last ten minutes or so switch from humor to seriousness (save one speech from Bee) suddenly and yet without missing a step. The last ten minutes seem to come from a "real" zombie movie and are filled with emotion and pathos. It's kind of startling, but it also fits.
All in all, I definetly recommend this movie. It is one of my favorites. Just go in expecting humor. Heck, it's best to go into the movie not knowing anything about it.