chipsandtv

This widget lets you display your latest tweets on your blog. Various configuration options are available.
Features:
<ul>
<li>No need to enter your Twitter password</li>
<li>No Javascript</li>
<li>Simple but reliable caching, so your website won’t slow down</li>
<li>Various options such as clickable URLs and usernames, date format etc.</li>
<li>Supports multiple instances at the same time</li>
<li>Fully compatible with widget-ready themes</li>
</ul>

Simple Twitter Widget

A simple but powerful widget to display updates from a Twitter feed. Configurable and reliable.

H. Peter Pfeufer

This Plugin will add a twitter timelina as a sidebarwidget to your wordpress-blog. This timeline is provided by twitter as you can see <a href="http://twitter.com/about/resources/widgets/widget_profile" rel="nofollow ugc">here</a>. 
Now you dont need to copy and paste the code from twitter with your settings anymore, just install the plugin and set the options.
Features
<ul>
<li>Easy install</li>
<li>Panel for easy configuration</li>
<li>Customisation via CSS in settings</li>
</ul>
Available Languages
<ul>
<li>English</li>
<li>German</li>
</ul>

WP Twitter Timeline

Add a sidebarwidget with your twitter timeline to your WordPress-Blog.

Simple Twitter Widget vs WP Twitter Timeline