Favorite Wordpress Plugins

[LinkBuildingBible]

What are your favorite Wordpress Plugins that you use?

Here is the list of the top ones I currently use on my blog:
Advanced Category Excluder (allows me to make an RSS only category...)
Akismet (blocks spam)
All in One SEO Pack (THE plugin for SEO on wordpress)
Brian's Threaded Comments (allows me to reply directly under a comment)
Commentluv (gives people more backlinks)
Dagon Design Sitemap Generator (creates a sitemap)
Delink Comment Author (If someone has a good comment, but links to a spammy site, you can keep the comment but delink the URL)
DoFollow (allows comment links to be dofollow)
FeedBurner FeedSmith (makes all of my feeds point to feedburner)
No Self Pings (I do tons of internal linking, so this stops me from pinging myself)
Peter's Custom Anti-Spam (great "captcha" replacement... lets you choose which words people have to type in, instead of random letters and numbers)
Related Posts (shows related posts... great for internal linking)
Show Top Commentators (shows the top commenters and gives them some link love)
Secure and Accessible PHP Contact Form (creates a good contact form)
Subscribe To Comments (allows readers to subscribe to comments)
Wordpress Automatic Upgrade (fantastic, easy to upgrade...)

[Brody]

Awesome list many thanks - this will be very useful. I'm going to add the Show Top Commentators mod because I think this will give visitors an insentive to comment.

[LinkBuildingBible]

Let me know your website when you do... i could always use some good site-wide links.... (oops, did I give away a great link building tip for free?) haha.