DirectoryPress

DirectoryPress is a fully featured directory theme for WordPress, it allows you to turn your standard WordPress blog into a powerful online link directory.
Not only does DirectoryPress come with great directory plugin features but also it comes with a range of changeable themes and designs, you can easily switch between any of the designs available

More at: http://weblogtoolscollection.com/archives/2010/01/11/wordpress-theme-releases-for-0110-2/