I just finished updating the fun facts WordPress plugin. The new 2.0 version is a major upgrade. The widget code uses WordPress 2.8 widget architecture and I added a shortcode. You just have to put [fun-facts] in your posts or pages to have an embedded widget (see below). Get the fun facts WordPress plugin.
In Bhutan, government policy is based on Gross National Happiness; thus most street advertising is banned, as are tobacco and plastic bags.