Wiki Plugins
Administration
Insert Headers and Footers is a simple plugin that lets you add scripts like Google Analytics to your WordPress site without having to get your hands dirty in code. Moreover, the simple interface gives you one place where you can add all of you scripts rather than dealing with dozens of plugins.
(Insert Headers and Footers, WordPress plugin directory)
More information and download »
Content
Category Sticky Post
Category Sticky Post allows you to mark a post to be displayed – or stuck – to the top of each archive page for the specified category.
(Category Sticky Post, WordPress plugin directory)
More information and download »
Table of Contents Plus
A powerful yet user friendly plugin that automatically creates a context specific index or table of contents (TOC) for long pages (and custom post types). More than just a table of contents plugin, this plugin can also output a sitemap listing pages and/or categories across your entire site.
(Category Sticky Post, WordPress plugin directory)