Intentional Software - Video of a Presentation
" Intentional Software is pioneering a radical new software approach that separates business domain knowledge from software engineering knowledge. This approach accelerates software creation and maintenance as domain experts themselves contribute domain knowledge in their favorite domain language and notation."
.. interesting video/presentation about DSL in general, but also about their workbench .. especially around ~36min, when they show the Pension Fund Calculation workbench .. I know, still doesn't sound that cool .. and by the way it is part of Microsoft's Oslo project .. but just watch it :-) ..