New in WordPress 2.7 is the template tag
wp_page_menu(). This function creates a page navigation. As parameter you can add a menu "Home" with show_home , or whatever you like.
wp_page_menu() is a wrap for
wp_list_pages(), which additionally add a link to the homepage and assign the class
current_page_item, if the starting page is active. For users who doesn't know a lot about PHP, this will be a great help.
From the aspect of a theme developer, it might be a problem using CSS Frameworks, which uses their own classes and structure.