While this plugin 'Category Page' aka
page2cat (version 2.5 - get it at
http://wordpress.org/extend/plugins/page2cat/) seems to be gathering dust (last update 3/29/2008) it still works, but the way it works is it lists just the titles (as links) of a category on a page. Most people seem to want to be able to list the entire post. You can do that by making a slight change to the plugin.
Edit the plugin lines 618-620 and change them from:
HTML Code:
foreach($catposts as $single):
$output .= "<li><a href='".get_permalink($single->ID)."'>".$single->post_title."</a></li>";
endforeach;
to
HTML Code:
foreach($catposts as $single):
query_posts('cat='.$v0.'&showposts='.get_option('posts_per_page'));
endforeach;
That all it takes.