<ul>

<?php

global $post;

$postid = $post->ID;

$args = array( 'orderby' => 'rand', 'post__not_in' => array($post->ID), 'showposts' => 10);

$query_posts = new WP_Query();

$query_posts->query($args);

?>

<?php while ($query_posts->have_posts()) : $query_posts->the_post(); ?>

<li><a href="<?php the_permalink(); ?>" rel="bookmark" title="<?php the_title_attribute(); ?>"><?php the_title(); ?></a></li>

<?php endwhile; ?>

</ul>