A horde of decaying zombies invaded San Francisco's downtown Apple store on Friday evening, hunting for brains, terrifying the customers, and gnawing on iMacs. Zombie gnaws on iMac but prefers human brains (Credit: Declan McCullagh) I've placed some photos here. I'm pleased to report that the zombies ultimately decided human brains were tastier than plastic iMacs, although it wasn't for lack of effort in trying to vary what must be a monotonous diet. It was difficult to judge the exact number of zombies that shuffled through the city's shopping district, losing limbs, blood, and unmentionable body parts along the way,...