One of the companies that I visited with at APA was Winston Associates. They use GIS and other tools to create realistic visualizations of planning scenarios. I enjoyed seeing the interesting new urbanism activities that the firm is involved in, and really liked the realism in their visualizations, down to moving people and cars.
You can view quite a few of these interesting overviews and visualizations from their website, including the redesign of Carson City, Nevada’s main drag from the screen grab above.

