Menu callback that returns two instances of the node form.
function form_test_two_instances() {
global $user;
$node1 = (object) array(
'uid' => $user->uid,
'name' => isset($user->name) ? $user->name : '',
'type' => 'page',
'language' => LANGUAGE_NONE,
);
$node2 = clone $node1;
$return['node_form_1'] = drupal_get_form('page_node_form', $node1);
$return['node_form_2'] = drupal_get_form('page_node_form', $node2);
return $return;
}