Magento: Product listing by manufacturer name

<?php
$name = 'manufacturer';
$attributeInfo = Mage::getResourceModel('eav/entity_attribute_collection')->setCodeFilter($name)->getFirstItem();
$attributeId = $attributeInfo->getAttributeId();
$attribute = Mage::getModel('catalog/resource_eav_attribute')->load($attributeId);
$attributeOptions = $attribute ->getSource()->getAllOptions(false);

foreach ($attributeOptions as $_option){
    echo $_option['label'];

    $productcollection = Mage::getModel('catalog/product')->getCollection()
        ->addAttributeToSelect('*')
        ->addAttributeToFilter($name, $_option['value']);

    foreach ($productcollection as $_product){
        echo $_product->getName();
    }
}
?>