Screenshots and demo: http://www.stevenhenty.com/products/wordpress-plugins/drop-shadow-boxes/examples/
License: GPL v2 or later
Drop Shadow Boxes provides an easy way to highlight important content on your posts, pages and widget areas. Personalise the box with drop shadow effects like raised, lifted and perspective and choose whether the box has an inside shadow, outside shadow and rounded corners. The plugin includes a widget and shortcode builder with a preview so you can test your box before adding it.