Hope you enjoy it!

<?php
// Magento XML products exporter
// Version 0.1
// by Michele Marcucci
// http://www.michelem.org

require_once 'app/Mage.php';
umask( 0 );
Mage::app( "default" );
Mage::app()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID);

$_magentoPath = "CHANGETHISTOYOURMAGENTOPATH ex: /var/virtual/magento"
$_urlPath = "";
$_imagePath = $_urlPath . "media";
$_logFileName = "export_products.log";
$_xmlPath = $_magentoPath . "/var/export";

Mage::log( "Export start", null, $_logFileName );

// Prepare collection
$_productCollection = Mage::getModel('catalog/product')->getCollection();
$_productCollection->addAttributeToSelect('*');

/* You can change and uncomment these lines below to filter your products collection */

// Filter by updated_at date, get only daily changes
//$_productCollection->addFieldToFilter('updated_at', array('from'=>date("Y-m-d", time()-86400)));

// Filter by product type, get only downloadables
//$_productCollection->addFieldToFilter('type_id',  array('like'=>'downloadable'));

// Filter by sku get only products with sku like "EBOOK-%"
//$_productCollection->addFieldToFilter('sku',  array('like'=>'EBOOK-%'));

// Limit output to 15 records
//$_productCollection->getSelect()->limit(15);

Mage::log( "Products to be exported: " . $_productCollection->count(), null, $_logFileName );

$i = 1;
foreach ( $_productCollection as $_product ) {

	// Prepare array of variables to grow XML file
    $v['sku'] = $_product->getSku();
    $v['product_name'] = $_product->getName();
	$v['type'] = $_product->getTypeId();
    $v['description'] = $_product->getDescription();
    $v['short_description'] = $_product->getShortDescription();
    $v['meta_title'] = $_product->getMetaTitle();
    $v['meta_description'] = $_product->getMetaDescription();
    $v['meta_keyword'] = $_product->getMetaKeyword();
    $v['created_at'] = $_product->getCreatedAt();
    $v['updated_at'] = $_product->getUpdatedAt();
    $v['url_path'] = $_urlPath . $_product->geturlpath();
    $v['image'] = $_imagePath . $_product->getImage();
    $v['image_label'] = $_product->getImageLabel();
  	$v['price'] = $_product->getPrice();
   	$v['special_price'] = $_product->getSpecialPrice();
    $v['weight'] = $_product->getWeight();

	// Get the Magento categories for the product
    $categoryIds = $_product->getCategoryIds();

	foreach($categoryIds as $categoryId) {
    	$category = Mage::getModel('catalog/category')->load($categoryId);
    	$v['categories'][$_product->getSku()][] = $category->getName();
	}

    // If product is downloadable get some informations about links added
    if ( $_product->getTypeId() == "downloadable" ) {
    	$_links = Mage::getModel('downloadable/product_type')->getLinks( $_product );
    	foreach ( $_links as $_link )
    		$v['available_formats'][$_product->getSku()][] = $_link->getTitle();
    }

	// Prepare XML file to save
	$xmlFile = $_xmlPath . "/" . $_product->getSku() . ".xml";

	$doc = new DomDocument('1.0', 'UTF-8');
	$doc->preserveWhiteSpace = false;
	$doc->formatOutput = true;	

	$root = $doc->createElement('product');
	$root = $doc->appendChild($root);

	$occ = $doc->createElement('root');
	$occ = $root->appendChild($occ);

	foreach ( $v as $fieldName => $fieldValue ) {
		$child = $doc->createElement($fieldName);
    	$child = $occ->appendChild($child);

		if ( is_array($fieldValue) ) {
			$value = $doc->createTextNode(implode( "|", $fieldValue[$_product->getSku()] ));
			$value = $child->appendChild($value);
		} else {
			$value = $doc->createTextNode($fieldValue);
			$value = $child->appendChild($value);
		}

	}

	// Save each product as XML file
	$doc->save( $xmlFile );

	Mage::log( "File " . $i . ": " . $_product->getSku(), null, $_logFileName );

	$i++;
}