Directory

Keyword = tags
Category
+ Categories and Tags
Listing
Ratings Shorttags
Ratings shorttags is a very simple plugin that allows authors to rate things in posts by adding a shorttag as simple as [rating=5]
http://noscope.com/journal/2009/02/ratings-shorttags-plugin-for-wordpress - detail
Google PR :
Sniplets
Sniplets is a text insertion plugin that allow you to insert text or replace tags at any point within a post
http://urbangiraffe.com/plugins/sniplets/ - detail
Google PR :
WP-Cumulus
WP Cumulus is a wordpress plugin for displaying your categories and tags in a 3D flash movie
http://wordpress.org/extend/plugins/wp-cumulus/ - detail
Google PR :