Did you know that The Walking Dead has a "zombie school"? That's where extras learn how to become the undead.
Don't think you'd make a good zombie just because you can hiss and throw your arms out, either. While they talk about how there's no real 'right' way of being a zombie—they let the actors feel that out and come up with whatever works best for them—there's definitely a cliched, if not wrong way to be a zombie.
Though if you drink a lot you may already know how to be a good zombie, apparently...