Get product name using its sku - in efficient way - using collection

If for some reason you have list of products skus, and for each you need to fetch out it's name,
you will better not use the old way of
$pname = Mage::getSingleton("catalog/product")->load(Mage::getSingleton("catalog/product")->getIdBySku($productSku))->getName();

because it will slow up dramatically your site.
Better use the following piece of code:

<?php

$productSku = 'sku1';

$pname = Mage::getSingleton("catalog/product")
	    		->getCollection()
	    		->addFieldToFilter('sku', $newpsku)
	    		->addAttributeToSelect('name')
	    		->load()
	    		->getFirstItem()
	    		->getName();