Just spent the last hour finding all the Twitter Wordpress Plugins that are available.... did I miss any?

Comment Twitter SMS Notification
Get notified by SMS when a user post a new comment on your blog.

Twitter Tools
Automatically posts to Twitter when you publish a new blog post or gives you the option to post it to twitter manually. And can pull your "tweets" into your blog.

TwitterDoodle
TwitterDoodle automatically searches Twitter for keywords and publishes them to your blog at regular intervals (set by you). I use this on my twitter blog to see if anyone has found a cool new twitter tool and have it set to go into it's own category and not on the frontpage.

Twitter Badge
Official javascript codes that display badges showing what you are posting on Twitter.

The Twitter Updater
Automatically sends a Twitter status update to your Twitter account when you create, publish, or edit your WordPress post. You can specify the text for the updates, and also have the option to turn the auto update on/off for the different post actions in the admin panel.

TwitThis
When visitors to your website click on the TwitThis button or link, it takes the URL of the webpage and creates a shorter URL using TinyURL. Then visitors can "tweet" this shortened URL and a description of the page.
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Twitter Sidebar Widget
Customise the number of updates shown in your sidebar, individual links to each status update on Twitter, style your Twitterings using css, choose whether to display your Twitter name before each post and customise text between the post text and the relative time.

Twitter Feed
Posts your blog updates to your twitter account. Login to twitterfeed using your OpenID, provide the URL for your blog RSS feed, and how often to post to Twitter. (You can use TwitterFeed to post your YouTube updates to Twitter too).

Twitt-Twoo
Allows you to update your Twitter status right from your blog’s sidebar. Powered by Ajax.

SimpleTwitter
Enables WordPress blog owners to easily add Twitter messages to their templates.

Twitter Sharts
Simple and effective method of embedding your Twitter status anywhere within your WordPress Blog posts or pages.

RSS to Twitter
PHP script to feed RSS to Twitter.

TwitterComments
Updates Twitter when a comment is posted on your blog.

Plurk Updater
Plurk Updater sends a Plurk to your account anytime you create, publish, or edit a post on your WordPress blog. You can pick and choose when Plurks are sent and what text is passed along with it.

Twitter Widget Pro
Displays your twitter feeds on your blog, including @username and link parsing, feeds that include friends or just one user, and can even display profile images for the users.

Twitter Blaster
Twitter Blaster is a plugin that will allow your visitors to post to your Twitter account.