Sometimes it's easy to forget how powerful Visio is. If all you ever create with with Visio is flowcharts and UML diagrams you may not know about many of its graphics tools.
Mai-lan (Lead Program Manager, Visio) has many blog posts about Visio, including developing with the SDK and generating MDSN style diagrams
She's gotten multiple requests from blog readers to show how to get the same visual quality as seen in architectural diagrams posted on MSDN articles
Links