Adds an image above the title on the WordPress post editing screen.

image-above-title.php

<?php
/*
Plugin Name: Image Above Title
Plugin URI: http://pmg.co
Description: Adds an image above the title on the WordPress post editing screen.
Version: n/a
Author: Christopher Davis
Author URI: http://pmg.co/people/chris
License: creative commons/GPL2
*/

add_action( 'dbx_post_sidebar', 'wpse27700_add_image' );
function wpse27700_add_image() 
{
	echo '<img id="wpse27700-image" src="http://placebear.com/500/100" alt="wpse27700 bear" style="display:none;" />';
}

add_action( 'admin_head', 'wpse27700_admin_head' );
function wpse27700_admin_head()
{
	?>
	<script type="text/javascript">
		jQuery(document).ready(function(){
			var wpse27700 = jQuery('#wpse27700-image');
			wpse27700.remove();
			jQuery('#titlediv #titlewrap').before(wpse27700.show());
		});
	</script>
	<?php	
}

+1 for placebear