wptwit

WPTWIT is a plugin for WordPress which integrates Twitter into your site. With a useful sidebar widget and a powerful templating system, this plugin allows you to keep your visitors updated with your latest tweets. You can see the plugin in action by looking at my sidebar. This work is licensed under a Creative Commons Attribution-Share Alike 3.0 License. Just download it already! Or, are you having trouble? I can help!

Join the 903 people who have downloaded WPTWIT.
Features
Simple templating system.
Automatic time offset detection.
Included sidebar module/widget.
Uses the integrated WordPress RSS parser.
Documentation
Download the plugin.
Unzip to your plugins directory.
Activate the plugin.
Go to Options — WPTWIT.
Enter the URL of your Twitter RSS in the Feed URL field. You can use the URL by going to bottom of your Twitter page and right clicking RSS Feed.
Enter the number of statuses you would like to display in the Number of Statuses to Display field.
Put anything you would like to appear before the list in the Before List field. (eg. <ul>)
Put anything you would like to appear after the list in the After List field. (eg. </ul>)
Enter the date format you would like to use in the Date Format field, according to the PHP format.
Enter the template you would like to use in the Default Status Template field. Use the template tags in it. (eg. <li class=”current”><a href=”%link%” rel=”bookmark” title=”%time_ago%, ago I was %status%”><span class=”time”>%date%</span><span class=”status”>I was <strong>%status%</strong>.</span></a></li>)
Enter the template you would like to use for your latest status in the Current Status Template. Use the template tags in it. (eg. <li class=”current”><a href=”%link%” rel=”bookmark” title=”%time_ago%, ago I was %status%”><span class=”time”>%date%</span><span class=”status”>I am <strong>%status%</strong>.</span></a></li>)
Click Update Options ».
You should be able to add the Twitter Module to any widget-enabled theme. It will automatically call the list, with a containing div class of sb-twitter. If your theme does not support widgets, you can call <?php ae_wptwit_output(); ?> to produce similar output.