Ptwix web is an open source component,, which is built into PHP to display the tweets Ajaxed in an interface. It can be configured to display your tweets and tweets from your friends.
Once a page is loaded, the latest tweets are presented and an update button can make a Ajax call to get news.
The component comes with 3 ready for use and new themes can be created by updating the CSS + images.
Ptwix is so easy to install and supports caching to speed up loading