Multilingual Breadcrumb
Assuming you want your breadcrumbs like this:

  Home/La Casa &gt;&gt; Node/Nodo &gt;&gt; Friends/Amigos


You could override template_preprocess_breadcrumb like so:

  function MY_THEME_preprocess_breadcrumb(&amp;$variables)
  {
     $breadcrumbs = &amp;$variables['breadcrumb'];
     foreach($breadcrumbs as &amp;$breadcrumb)
     {
         $breadcrumb .= '/' . locale($breadcrumb, null, 'SP');
     }
   }


Don't quote me on the langcodes, and this would require that you have the locale module installed and enabled, but it should output the above example breadcrumb.