On October 26th, 2008, zombies clumped together to break the Guinness Book Of World Records for "Most Attended Zombie Walk". It was one of the many events held at the weekend long Zombie Fest, at the Monroeville Mall. This is the same mall where the original Dawn Of The Dead was filmed. I sat at a table selling copies of my book of zombie haiku, but sneaked away during the zombie walk to take most of these pictures.
Link -Thanks, Ryan Mecum!