Niagara Commuter Flow
I developed this interactive map in Tableau, using freely available Statistics Canada data. It is interactive – select the place of origin on the right, and the map will show you where residents of that place go to work.
I use this as an example of how important data visualization and presentation is. The Statistics Canada tables are hard to get a coherent story out of, but this lets the user get a grasp of commuter flows very quickly.