I don't care whether they walk, run, moan or shriek. I don't care whether they're caused by a virus, a parasite, nanobots or manifestations of evil. I don't care whether destroying the brain puts them down or nothing short of complete incineration stops them. From Night of the Living Dead to 28 Days Later, they're all good to me. But I must insist that zombies be stupid. When they start using melee weapons, or worse, firearms, a line has been crossed. And they absolutely cannot be domesticated, no matter what the girly books say (I'm looking at you, Anita Blake).