Index: wp-includes/post-template.php
===================================================================
--- wp-includes/post-template.php	(revision 23386)
+++ wp-includes/post-template.php	(working copy)
@@ -1371,7 +1371,7 @@
 	}
 
 	/* translators: post revision: 1: when, 2: author name */
-	$titlef = _x( '%1$s by %2$s', 'post revision' );
+	$titlef = _x( '<strong>%1$s:</strong> %2$s', 'post revision' );
 
 	if ( $parent )
 		array_unshift( $revisions, $post );
@@ -1410,8 +1410,9 @@
 			$rows .= "\t<td class='action-links'>$actions</td>\n";
 			$rows .= "</tr>\n";
 		} else {
-			$title = sprintf( $titlef, $date, $name );
-			$rows .= "\t<li>$title</li>\n";
+			$title = sprintf( $titlef, $name, $date );
+			$avatar	= get_avatar( $revision->post_author, 18 );
+			$rows .= "\t<li>$avatar $title</li>\n";
 		}
 	}
 
Index: wp-admin/css/wp-admin.css
===================================================================
--- wp-admin/css/wp-admin.css	(revision 23386)
+++ wp-admin/css/wp-admin.css	(working copy)
@@ -8585,3 +8585,14 @@
 .locale-lt-lt .inline-edit-row fieldset label span.input-text-wrap {
 	margin-left: 8em;
 }
+ul.post-revisions img {
+	float: left;
+	margin: 2px;
+}
+ul.post-revisions li {
+	border-bottom: 1px solid #FFF;
+}
+ul.post-revisions li  a {
+	line-height: 24px;
+}
+