diff -rupN site_map/site_map.admin.inc site_map_new/site_map.admin.inc
--- site_map/site_map.admin.inc	2009-06-30 05:12:54.000000000 +1000
+++ site_map.admin.inc	2010-05-07 12:17:34.716840125 +1000
@@ -80,6 +80,26 @@ function site_map_admin_settings() {
 //     '#description' => t('When enabled, this option will show all children pages for each book.'),
 //   );
 
+  $block_options = array();
+  $blocks = _block_rehash();
+  foreach ($blocks as $bid => $block) {
+    $block_options[$bid] = $block['info'];
+  }
+  $form['site_map_content']['site_map_show_blocks'] = array(
+    '#type' => 'select',
+    '#title' => t("Blocks to include in the site map"),
+    '#default_value' => variable_get('site_map_show_blocks', array()),
+    '#options' => $block_options,
+    '#multiple' => TRUE,
+    '#description' => t('This will include the output of any selected blocks in the sitemap. Ctrl-click (Windows) or Command-click (Mac) to select more than one value.'),
+  );
+  $form['site_map_content']['site_map_show_block_title'] = array(
+    '#type' => 'checkbox',
+    '#title' => t('Show block titles'),
+    '#default_value' => variable_get('site_map_show_block_title', 1),
+    '#description' => t('When disabled, any blocks included in the sitemap will not have their title displayed.'),
+  );
+
   $menu_options = array();
   $menu_options = menu_get_menus();
 
diff -rupN site_map/site_map.module site_map_new/site_map.module
--- site_map/site_map.module	2009-10-15 07:35:28.000000000 +1100
+++ site_map.module	2010-05-07 12:19:03.094838735 +1000
@@ -133,6 +133,9 @@ function theme_site_map_display() {
   // Compile the books trees.
   $output .= _site_map_books();
 
+  // Compile the blocks.
+  $output .= _site_map_blocks();
+
   // Compile the menu trees.
   $output .= _site_map_menus();
 
@@ -340,6 +343,26 @@ function _site_map_books() {
     }
   }
 
+  return $output;
+}
+
+/**
+ * Render blocks
+ */
+function _site_map_blocks() {
+  if ($bids = variable_get('site_map_show_blocks', array())) {
+    $blocks = _block_rehash();
+
+    foreach ($bids as $bid) {
+      if (isset($blocks[$bid])) {
+        $block = $blocks[$bid];
+        $view = module_invoke($block['module'], 'block', 'view', $block['delta']);
+        $title = variable_get('site_map_show_block_title', 1) ? $view['subject'] : '';
+        $output .= theme('site_map_box', $title, $view['content'], 'sitemap-block');
+      }
+    }
+  }
+
   return $output;
 }