The worst part about navigating the WordPress Admin is waiting for page after page to load as you walk through the menus.
Luckily, there’s a better way. Lighter Menus is a useful plugin (compatible with WP 2.5) that restyles the menus into JavaScript dropdowns that reside at the top of the screen.
I just installed the plugin, and was instantly amazed by how much easier it became to navigate the Admin.
Here’s a screenshot from the plugin ZIP: