Wordpress rocks. In extendability (widgets, plugins, that too all free and open source); in design (beautiful free themes, wonderful CMS capabilities, magazine styles, et al); and in ease of use. Just for starters, the plugins I use on my website (which are listed by using another plugin!):

There are 76 plugins used: 35 active plugins and 41 inactive plugins.

Active Plugins

  About Me widget 2.1
» Samuel Devol & John BouAntoun (url)
Adds an “About Me” widget to your sidebar.

  Add to Any: Share/Bookmark/Email Button .9.9.4
» Add to Any (url)
Help readers share, bookmark, and email your posts and pages using any service. [Settings]

  Advanced Category Excluder 1.4.3
» DjZoNe (url)
This plugin helps you to manage your content, RSS feeds, sidebar widgets, and fine tune where you want to display your posts, pages, links, link categories, or hide.

  Advanced Category Excluder Widgets 1.4.3
» DjZoNe (url)
This plugin one basic widgetsm that support exclusion

  Akismet 2.2.7
» Matt Mullenweg (url)
Akismet checks your comments against the Akismet web service to see if they look like spam or not. You need a WordPress.com API key to use it. You can review the spam it catches under “Comments.” To show off your Akismet stats just put <?php akismet_counter(); ?> in your template. See also: WP Stats plugin.

  All in One SEO Pack 1.4.6.13
» Michael Torbert (url)
Out-of-the-box SEO for your Wordpress blog.

  Audio player 1.2.3
» Martin Laine (url)
Highly configurable single track mp3 player.

  Configurable Tag Cloud 4.5
» Keith Solomon (url)
A tag cloud plugin for Wordpress 2.3 to give you more flexibility with the styling of your tag cloud.

  Configure SMTP 2.7
» Scott Reilly (url)
Configure SMTP mailing in WordPress, including support for sending e-mail via SSL/TLS (such as GMail).

  Contact Form 7 2.3
» Takayuki Miyoshi (url)
Just another contact form plugin. Simple but flexible.

  Exclude Pages from Navigation 1.9
» Simon Wheatley (url)
Provides a checkbox on the editing page which you can check to exclude pages from the primary navigation. IMPORTANT NOTE: This will remove the pages from any “consumer” side page listings, which may not be limited to your page navigation listings.

  Feed Statistics 1.3.1
» Christopher Finke (url)
Compiles statistics about who is reading your blog via an RSS feed and what they’re reading.

  FireStats 1.3.6-stable
» Omry Yadan (url)
Statistics plugin for WordPress.

  flickrRSS 4.0
» Dave Kellam (url)
Allows you to integrate the photos from a flickr rss feed into your site.

  Google Adsense widget 1.0
» Otto (url)
Like the Text widget, but specifically for Google Adsense blocks. Up to 4 instances of this widget may exist (since Google only allows 3 ads and one link block on a page). Heavily derived from the Text widget code included with the widget plugin by Automattic, Inc.

  Google Reader widget 1.8
» James Wilson (url)
Adds a sidebar widget to show your latest shared stories.

  Google Reader widget 0.1
» Miguel Ibero (url)
Adds a widget with the links to the stories shared or starred or of a certain tag of a google reader

  Gravatars 2.6
» Scott Merrill (url)
This plugin provides an administrative interface to control default gravatar options. Registered users can also (optionally) define local gravatar images that will override their gravatar.com default. Copyright 2005 Scott Merrill; Licensed under the terms of the GPL.

  Page Links To 2.3
» Mark Jaquith (url)
Allows you to point WordPress pages or posts to a URL of your choosing. Good for setting up navigational links to non-WP sections of your site or to off-site resources.

  Post-Plugin Library 2.6.2.1
» Rob Marsh, SJ (url)
Does nothing by itself but supplies common code for the Similar Posts, Recent Posts, Random Posts, and Recent Comments plugins. Make sure you have the latest version of this plugin.

  Previous Posts widget 1.0
» James Carppe (url)
A more customizable version of the built-in Recent Posts widget.

  Random Redirect 1.1
» Matt Mullenweg (url)
Allows you to create a link to yourblog.example.com/?random which will redirect someone to a random post on your blog, in a StumbleUpon-like fashion. You can also specific in the URL `random_post_type` or `random_cat_id`.

  Recent Comments 2.1.1 beta
» Rob Marsh, SJ (url)
Displays a list of posts most recently commented. Instructions and help online.

  Recent Posts 2.6.2.0
» Rob Marsh, SJ (url)
Displays a highly configurable list of the most recent posts. Instructions and help online. Requires the latest version of the Post-Plugin Library to be installed.

  Twitter for Wordpress 1.9.7
» Ricardo González (url)
Displays your public Twitter messages for all to read. Based on Pownce for Wordpress by Cavemonkey50.

  Twitter widget 1.5
» Sarah Isaacson (url)
Sidebar widget to display your Twitter timeline. The widget allows you to choose to display your twitter username in front of your updates. You can also choose whether to display the time before or after the twitter post.

  Wordpress Automatic Upgrade 1.2.5
» Keith Dsouza (url)
Wordpress Automatic Upgrade allows a user to automatically upgrade the wordpress installation to the latest one provided by wordpress.org using the 5 steps provided in the wordpress upgrade instructions. Go to Wordpress Automatic Upgrade to upgrade your installation Thanks to Ronald Huereca for making the plugin run in automatic mode.

  WordPress Database Backup 2.2
» Austin Matzko (url)
On-demand backup of your WordPress database. Navigate to Manage → Backup to get started.

  WordPress XML Export 2.0
» Aaron Brazell (url)
This will generate a WordPress XML export for import into other WordPress blogs. Based on code provided in 2.1+ versions of WordPress and originally written by Matt Mullenweg.

  WP-PluginsUsed 1.00
» Lester ‘GaMerZ’ Chan (url)
Display WordPress plugins that you currently have (both active and inactive) onto a post/page.

  WP-PostRatings 1.11
» Lester ‘GaMerZ’ Chan (url)
Adds an AJAX rating system for your WordPress blog’s post/page.

  WP Subdomains 0.6.9
» Alex Stansfield (url)
Setup your main categories, pages, and authors as subdomains and give them custom themes. Originally based on Subster Rejunevation.

  Yet Another Related Posts Plugin 2.0.4
» mitcho (Michael Yoshitaka Erlewine) (url)
Returns a list of the related entries based on keyword matches, limited by a certain relatedness threshold. New and improved, version 2.0!

  Youtube Favorites Plugin/Widget 1.0
» Ozh (url)
Customizable display of your latest Youtube favorite videos. (quick readme & manual)

  YouTube widget 1.1
» James Wilson (url)
Adds a sidebar widget to show a YouTube video.

Most of these are wonderful in functionality and are easily customisable. Do check them out for using in your website. And if you are using anything other than Wordpress to run your blog, it’s time to change, I say. Download the Wordpress engine and host your own; or get a free blog at Wordpress.com.