Automatically removes comments, new lines, tabs, and gzip compresses (GZIP) any CSS file called with "<?php bloginfo('stylesheet_url'); ?>"
Just activating the plugin with the default Kubrick theme will reduce the CSS file from 8k to 1.7k.
Be Aware: This plugin is very beta. There is a chance it will do something odd, or just not work. If that happens turn it off and drop a line here or submit a ticket at wp-plugins.org.
Also, I'm currently planning on upgrading the plugin with the ability to compress CSS that is called via @import commands.