dpm a $node and its attached $product

foo.module

<?php

/**
 * Implements hook_node_view().
 */
function foo_node_view($node, $view_mode, $langcode) {
  if ($node->type == 'product_display') {
    $product_id = $node->field_product[LANGUAGE_NONE][0]['product_id'];
    $product = commerce_product_load($product_id);
    dpm ($node, 'node');
    dpm ($product, 'product');
  }
}