I didnt find “you may also like”, “add tags” “product description” modules as in other magento templates.
Our theme is totally flexible and it should display any other design elements you may see in other themes, it simply depends on Magento configuration. We already had the “product description” section, and just enabled the Mage_Tag module via Magento admin and added the Upsell product. So there are all sections on products page. Here is a sample: http://organic.worryfreelabs.com/women-s-winter-hat.html