Ladies and gentlemen, may I present to you my first Habari plugin: HB-Cumulus.
HB-Cumulus is a Flash-based tag cloud for Habari that displays your tag cloud in a rotating sphere just like the one shown here.
(The example demonstrated here is actually WP-Cumulus as this site is still on Wordpress, but the appearance and functionality is identical in HB-Cumulus, with slightly different configuration options)
Further details, and download links can be found on the HB-Cumulus project page.
If you encounter any problems or have any queries, please leave your comments on this post.