Clock strikes three at Comcast Center

Most stunning of all, however, is "The Comcast Experience," a 2,000 square-foot LED screen projecting computer-generated images so realistic, you'll think they're jumping out of the wall. With a resolution 500% greater than that of an HD television, the Experience is a remarkable technological and artistic achievement.
The video wall, a giant HD video screen that is actually the largest four-millimeter LED screen in the world, is located right in the building's publicly accessible main lobby, so everyone can enjoy it.