I'm looking for some pretty advanced blog software with membership. From there, members can rate, post comments, post in forums. Could the forums be integrated into the blog software? So they wouldn't have to sign up for one account at my site and one at another third party forum software(phpbb, ipb, etc.) I have some experience with Textpattern and I LOVE IT. It's very easy to create your own layout without dealing with ten files like other CMS's/Blog Software. The only downside is there is no community features available. If there were, I'd definitely use it. I've looked at Wordpress but creating your own template seems a little complicated and Textpattern is more optimized for SEO.
Mambo/Joomla has a forum which can be integrated into the CMS and that can perform blogging tasks with a minor modifications to control the categories a user may post to. See: Joomla CMS Mambo CMS Simpleboard forum software best of all, it's all free