Magento - filter product collection by multiple SKU's

I know it's possible to filter a collection by one SKU, as below:

$_testproductCollection = Mage::getResourceModel('catalog/product_collection')
->addAttributeToSelect('*')
->addAttributeToFilter('SKU', array('like'=>array('my-sku')));
$_testproductCollection->load();

But is there some way to add a list of SKU's, like the following (which doesn't work):

->addAttributeToFilter('SKU', array('like'=>array('my-sku1, my-sku2, my-sku3')))