InsertNode 7 Snippet (requires token_filter)

gistfile1.php

<?php

/**
 * Implements hook_tokens().
 * This is used to insert nodes or node-tokens into content with token_filter, 
 * @see http://drupal.org/node/902244#comment-5616694
 */
function sharpe_tokens($type, $tokens, array $data = array(), array $options = array()) {
  $replacements = array();
  
  // node.tokens.inc lets you work with the current-node's tokens, 
  // but not a different node's. This pulls in external node info
  if ($type == 'node') {
    foreach ($tokens as $token => $full) { // gives 1:title => [node:1:title]
      $parts = explode(':', $token, 2);
      if (count($parts) == 2) {
        list($nid, $attr) = $parts; 
        // is this [node:1:title] instead of [node:title]?
        if (is_numeric($nid)) {
          
          // EITHER Render the node passing in build-mode, e.g. [node:1:node_view:full]
          $parts = explode(':', $attr, 2);
          if ( count($parts) == 2 && $parts[0] == 'node_view' ) {
            $replacements[$full] = drupal_render( node_view(node_load($nid), $parts[1]) );
          }
          
          // OR Replace the node's token
          else {
            $new_token = array( $attr => "[node:$attr]" );
            $node_replacements = token_generate($type, $new_token, $data = array('node' => node_load($nid)), $options);
            // get first (there's only one if successful)
            if ($replacement = array_pop($node_replacements) ) {
              $replacements[$full] = $replacement;
            }  
          }
        }
      }
    }
  }
  return $replacements;
}