I love the whole Zombie genre. It reminds me of the Cowboys and Indians games we used to play as kids, only more modern, with more fantasy, and with less insensitivity towards Native Americans.
All in all, a lot of fun if you don't take it too seriously.
It's also a great way to keep your senses sharp and keep you aware of your surroundings by playing the "What If" game. As in, thinking what you would do if you were in the same situation as a zombie movie. Or, taking a normal everyday situation and make it more interesting by thinking about what would happen if you threw some zombies in the mix. It can be a fun game for the young and old alike.