The excellent PHP Simple HTML DOM Parser, provides the opportunity to bring external content into your web pages.
Here is an example of taking the top news story from the BBC website.
See demo.
<?php
include'simple_html_dom.php';
$html = file_get_html('http://www.bbc.co.uk/news/uk/');
foreach($html->find('#top-story') as $e)
{
echo $e->innertext . '<br />';
}
?>