Index: wp-includes/post-template.php
===================================================================
--- wp-includes/post-template.php	(revision 18463)
+++ wp-includes/post-template.php	(working copy)
@@ -430,6 +430,7 @@
 		$classes[] = 'single';
 		$classes[] = 'single-' . sanitize_html_class($post->post_type, $post_id);
 		$classes[] = 'postid-' . $post_id;
+		$classes[] = $post->post_name;
 
 		// Post Format
 		$post_format = get_post_format( $post->ID );
@@ -478,6 +479,7 @@
 		$post = get_page($page_id);
 
 		$classes[] = 'page-id-' . $page_id;
+		$classes[] = $post->post_name;
 
 		if ( $wpdb->get_var( $wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE post_parent = %d AND post_type = 'page' AND post_status = 'publish' LIMIT 1", $page_id) ) )
 			$classes[] = 'page-parent';