WordPress.org

Slightly modifies the built in Custom Menu widget to also show descriptions. Adds a span class of "CMWdesc" for easy styling. Borrows code from here as well (for the walker class rewrite). No guarantees of fitness for anything, I just couldn't find a plugin to do this simple thing so made one myself. Hope you like it. Note: Make sure descriptions are enabled in the screen options of your Menus admin, then edit to suit under each menu item. Add the widget and voila.