I'm more fascinated by the concept of a zombie than frightened. When you start to realize a disease that reanimates dead tissue while still letting the body decompose at what appears to be a normal rate is less likely to happen than getting struck by lightning or winning a lottery you start to feel a tiny bit less fear about the whole situation. But then again still I own a copy of the Zombie Survival Guide so I have no room to talk.
EDIT: Also FYI, zombies who have already made a trip to the mortician are probably not going to get back up after being embalmed/gutted or cremated. Which means hands popping out of the ground is less likely to happen in countries that support pre-burial traditions besides just wrapping someone up in a blanket and throwing them in a ditch.
Sure if this disease were to exist it's totally possible it could still spread pretty rapidly through the still living population, but it always pisses me off when obviously embalmed zombies come back to life in movies. Part of that whole process includes removing the brain/other vital organs so it'd be pretty hard for anyone already residing in a coffin to pop back up, say hello & ask to eat your fucking brains.
ANOTHER EDIT: Yeah, I've put a lot of fucking thought into a zombie apocalypse. So what? We all have to have our hobbies.