WP Jump Menu plugin adds a drop-down “jump” menu to the bottom or top of the WordPress admin area filled with pages, posts, and custom post types. When a page or post is selected, it jumps to edit that page.
By adding this ability, you can save loads of time when editing a bunch of posts or pages. No more do you have to click on Pages, and then search for the right page in the list, and then click on the title or on edit. Simply find the page or post in the drop-down (which is neatly organized and indented) and it will jump to edit that page or post.
The plugin comes with an options page where you can edit the position (top or bottom) of the jump bar, the background color, font color, link color, border color and the icon and message that optionally get displayed on the left hand side.
Great for theme developers to help clients navigate in the admin area of WordPress
Download and info: http://wordpress.org/extend/plugins/wp-jump-menu/