http://oh-aguilera.com/ If seen similar designs on quite a few sites. I like the setup and was just curious and it's really bugging me.
You can tell because of this http://oh-aguilera.com/wp-login.php?redirect_to=http://oh-aguilera.com/wp-admin/
but yes; it is a cms - content management system basically a website that allows you to manage the content without coding knowelege once it is setup - Wordpress, Joomla etc are some examples
This is the power of Wordpress. It can be customized to the level that it looks like a professional website...