Mr Wong's Soup'Partments
Really cool site... the world's tallest virtual building. Each floor is designed and submitted by people from around the world. Great details and social commentary on each floor. Mr. Wong's rules of posting are also an idiosyncratic blend of social responsibility ("no porn" "no advertising your company") and retro CG aesthetic ("no photos, only pixel art"). I think there is something to be learned here for the World Trade Center competition.