Sorry I have not talked about them much. I wanted to see where they were heading with the whole WordPress widgets idea.
While they have had it for a little while on the hosted service, it was recently released as a pluging for normal WordPress users, meaning that if templates are modified to take advantage of the Widgets plugin, you can move things around, and add new features easily to your blog.
WordPress Widgets (WPW) is a plugin designed to provide a simple way to arrange the various elements of your sidebar content without having to change any code.
Check out all the details in the WordPress Codex.