Adding Category Description

I figured out that I can place this on the main category page and it will show the category title and then the description,

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<?php if (have_posts()) : ?>

<?php $this_category = get_category($cat);?>

<dt><?php echo $this_category->cat_name; ?></dt>
<dl><?php echo $this_category->category_description; ?></dl>

<?php while (have_posts()) : the_post(); ?> 

...

Here is also a link for more information:
http://codex.wordpress.org/Category_Templates#The_Custom_Category_Template