Those of you who have ridden the DC Metro may have seen the work of Cool "Disco" Dan, one of the most prolific graffiti artists of Washington, DC. I came across a great MetaFilter post that linked to an interview with him (YouTube video, a graffiti.org featured artist gallery, and a Washington City Paper article entitled "The Last of Cool 'Disco' Dan?" lamenting the fact that his art is all but gone. I'm glad I caught that post...