SuperBlogger is a new powerful plugin adding blogging functionality to Joomla! 1.5 articles. The plugin integrates popular services like Disqus.com (for comments) and Twitter, along with commonly used blogging tools like tagging, rating, bookmarking and social media sharing.
Add to that MVC template overrides and the ability to process images server-side and you got a real Wordpress contender, if not better in some areas!
I will test the plugin during the following days - stay tuned for a review :)