Anyone at the office can tell you I'm a major DDR addict. Not the 'go to the arcade once every couple of months to play a round' type, but the 'hallucinates scrolling arrows and suffers compulsive leg twitches after a week without it' type. I'm not sure whether it's my DDR wallpaper, the fact I have Stepmania (an open-source DDR emulator for PC) installed at both work and home, or simply the fact I never shut up about it that gives me away, but everyone knows once I get started on the subject I...