Ok, so not everybody will need these plugins, but if you really want to customize wordpress 3.0 and take advantage of it’s features, you’re gonna love every one of these 5 plugins…
Verve Meta Boxes
Verve Meta Boxes is a robust custom fields plugin with an intuitive, polished interface that allows for creation of text, textarea, image, file, date, time, datetime, select, radio, and checkbox custom fields for posts and/or pages.
Post Type Switcher
A simple way to change a post type in WordPress. Any combination is possible, even custom post types.
Admin Menu Editor
Admin Menu Editor lets you manually edit the Dashboard menu. You can reorder the menus, show/hide specific items, change access rights, and more.
Admin Management Xtended
It adds some icons to the posts/pages management panel with AJAX-driven CMS-known functions like toggling post/page visibility, changing publication date and title without having to open the edit screens or reload the page, plus changing page order with drag’n'drop, inline category management and inline tag management, plus much more.
CMS Press opens up the ability to create and manage custom content types and taxonomies for your WordPress site.