WP-Cumulus displays your tags and/or categories in 3D by placing them on a rotating sphere.
IMPORTANT NOTICE This plug is no longer actively being developed. I do not recommend you install and use it. If you are currently using this plugin, please consider disabling it. Running unmaintained plugins in WordPress can cause security- and other issues. More info at roytanck.com.
Should anyone be interested in taking over development, please contact me.
WP-Cumulus allows you to display your site's tags, categories or both using a Flash movie that rotates them in 3D. It works just like a regular tags cloud, but is more visually exciting. Clicking the tags can be a little hard (depending on your speed setting) but does take you to the appropriate page :).
The sources code for the Flash movie are available from wordpress.org.