Plugin Name: Breadcrumb Trail
License: GPL
Description:
Breadcrumb Trail is a navigational tool that shows a hierarchical menu of where a visitor is on your site. It provides a new template tag called breadcrumb_trail() that can be used to show a breadcrumb menu anywhere within your theme.
Download and release page:
http://justintadlock.com/archives/2009/04/05/breadcrumb-trail-wordpress-plugin