WordPress.org

WordPress 2.5 introduces a widgetized dashboard, but unfortunately no manager for it to rearrange and remove widgets. This plugin fills that need by creating a new admin page very similiar to the new sidebar widget manager.

It also makes it so that both widget order and widget options are stored on a per-user basis rather than everyone sharing a common configuration. Great for those multi-user blogs.

Via this plugin's settings page, you can also choose a default dashboard for users without a customized dashboard of their own and disable non-admins from customizing their dashboard effectively forcing all non-admins to see the dashboard of your choosing.