You give your relatives a lecture about color spaces and profiles when you email them your vacation photos. Seeing someone use Lens Flare or Comic Sans adversely affects your blood-pressure. You maintain a grid system for your refrigerator magnets. You organise your CD collection according to the Pantone chart. You sit at work for eight hours straight just looking at your monitor, waiting for a spark of inspiration that doesn't come. You're up 'til 5am because you came up with the best idea ever while brushing your teeth.