A widget that uses jQuery and Twitter to display a user's tweets (or can just list the updates). Works with the Twitter API 1.1
A Widget that uses jQuery (if you want) and Twitter to fade in and display a user's tweets one at a time, then fades into the next. You can set the amount of tweets and how long they stay before they fade into the next tweet. The tweets are in an infinite loop. It only uses the jQuery library that comes with WP. It is simple, but if you know CSS you can make it look very very nice.