Dataflow languages lend themselves to graphical programming paradigms much more readily than imperative approaches as well. e.g. This company's http://www.futur

Dataflow languages lend themselves to graphical programming paradigms much more readily than imperative approaches as well. e.g. This company's http://www.futurepointsystems.com/?page=products http://www.futurepointsystems.com/?page=products XEE product is a pretty slick dataflow XML ETL tool.