You've probably seen his work... Shephard Fairey is currently one of the most successful street artists of this age. Most recently his portrait of now President Obama was acquired by the national Portrait Gallery. His "Obey" stickers and stencils are widely distributed across the country... Here's an interview for some Sunday viewing enjoyment.
I get the feeling that the Fabricland workers were less than enthralled with thier jobs... many of the marks left indicate; futility a general sense of "poopiness" (see the foreground of the company logo) and ironic devotion...