http://www.sapweb20.com/blog/powerpoint-twitter-tools/instructions/

A beta version of PowerPoint Twitter Tools is now available for testing. Based on SAP BusinessObjects Xcelsius technology, the twitter tools allow PowerPoint presenters to see and react to tweets in real-time, embedded directly within their presentations, either as a ticker or refreshable comment page. There are currently three tools — but come back soon, this is changing fast!
  • PowerPoint Twitter ticker bar
  • PowerPoint Twitter feedback slide
  • PowerPoint Twitter voting