Prints in the footer the template being used for that page

SH-Which-Template-Is-This.php

<?php
/**
 * Plugin Name: SH Which Template Is This
 * Description: Prints in the footer the template being used for that page.
 * Author: Stephen Harris contact@stephenharris.info
 * Author URI: http://stephenharris.info
 * License: GPL
 * License URI: http://www.gnu.org/copyleft/gpl.html
 */
class SH_Which_Template_Is_This{
	static $template='';

	static function load(){
		add_filter('template_include', array(__CLASS__,'template_include'),9999 );
		add_action('wp_footer',array(__CLASS__,'wp_footer'));
	}
	static function template_include($template){
			self::$template = $template;
			return $template;
	}
	static function wp_footer(){
		if( !empty(self::$template) ){
			echo 'Current template is '.self::$template;
		}
	}
}
SH_Which_Template_Is_This::load();
?>