UPDATE : Please also check out my Silhouette Super-Pack at http://activeden.net/item/silhouette-superpack/99215
This is a Drag-and-Drop-able silhouette crowd of people walking and riding bicycles. You set the quantity of each in ActionScript. The placements of these all-vector silhouettes are totally random which creates an organic feel and is unique every time. Publishes at Flash 6 and above.