Yet Another Related Posts Plugin
Yet Another Related Posts Plugin is the result of some tinkering with John Bowyer’s version of Alexander Malov & Mike Lu’s Related Entries plugin. Modifications made include:

Wordpress Google Reader Widget
Google reader is an online RSS feed reader by Google Inc. It allows you to share combined feeds of shared, starred or tagged feeds. This widget takes that data and shows it on your wordpress blog’s sidebar.

Weasel’s TagIt!
This is a plugin that displays a link to your latest article that does not contain tags, and provides you with an editing link for it as well. This will help you update all your older articles that don’t have tags on them.

Raw HTML
This plugin lets you use raw HTML or any other code in your posts. Wrap a part of your post in special tags (below) to prevent WordPress from converting newlines to HTML paragraphs, escaping apostrophes and so on. Very useful if you need to add a CSS block or JavaScript to your post.