How to display last post excerpt?

<?php
$paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
$args= array(
	'category_name' => 'Category Name',
        'post_per_page' => 1,
	'paged' => $paged
);
query_posts($args);
?>

http://codex.wordpress.org/Function_Reference/get_posts