Official Google Buzz Demo

Google Buzz is a social aggregator that brings other services like Twitter, Picasa, Flickr, Facebook, etc. together on one page. If someone follows you, the videos, pictures, and texts you share will appear in their Buzz feed, and replies will be displayed instantly. Of course, it's no surprise that certain services are part of the "page cannot be displayed" series in certain regions. After activation here, you can experience it directly through Gmail.