Flash Mob - Zombies

I know a couple of us in the house talked about Flash Mobs before. Well, here's an interesting one that's going down in San Fran today - a zombie flash mob. I think it would be hillarious to be "in the know" and sit there and watch people's reactions as the living dead start infesting their streets, corners, and local starbucks. Let's just hope there's no half-crazed gamers in the crowd or some zombie actors could end up getting shot in the head.