<?
$backup = $post;
$tags = wp_get_post_tags($post->ID);
$tagIDs = array();
if ($tags) {
    		$tagcount = count($tags);
   		for ($i = 0; $i < $tagcount; $i++)
   			{
     			$tagIDs[$i] = $tags[$i]->term_id;
   			}

 $args=array( 'tag__in' => $tagIDs,'post__not_in' => array($post->ID), 'showposts'=>5, 'caller_get_posts'=>1);
 $my_query = new WP_Query($args);
 if( $my_query->have_posts() )
   					{
    					while ($my_query->have_posts()) : $my_query->the_post(); ?>
    					<h3><a href="<?php the_permalink() ?>" rel="bookmark" title="<?php the_title(); ?>"><?php the_title(); ?></a></h3>
  					<?   endwhile;
  					}
  			}
else { ?>
<h2>No related trailers found!</h2>
 <?php }

 $post = $backup;
  wp_reset_query();
 ?>