Just want to give a shout out to my favorite WordPress plugins. Here they are, in no particular order:

Bad Behavior – http://bad-behavior.ioerror.us/
Prevents spam without having to use CAPTCHA.

BM Custom Login – http://www.binarymoon.co.uk/projects/bm-custom-login/ 
Customize your WordPress login screen.

Developer Formatter – http://wordpress.org/extend/plugins/devformatter/ 
Uses GeSHi server-side highlighting to display your code in a post.

Fast Secure Contact Form – http://www.fastsecurecontactform.com/ 
Contact form. 

HTML Purified – http://urbangiraffe.com/plugins/html-purified/ 
Replaces default HTML filters. 

Link Indication – http://sw-guide.de/wordpress/plugins/link-indication-plugin/ 
Open external links in new window. 

Ozh’ Admin Drop Down Menu – http://planetozh.com/blog/my-projects/wordpress-admin-menu-drop-down-css/ 
A much better Admin menu plugin. 

Sociable for WordPress 3.0 – http://wordpress.org/extend/plugins/sociable-30/ 
Let people easily link to your post thru social networks. 

the_excerpt Reloaded – http://robsnotebook.com/the-excerpt-reloaded/ 
A much better excerpt plugin for your posts. 

WP-PageNavi – http://wordpress.org/extend/plugins/wp-pagenavi/ 
Page navigation. 

WYSIWYG Inline Code Command – http://wordpress.org/extend/plugins/wysiwyg-inline-code-command/ 
Easily add inline code to your post.