Google Campfire One is a Google event, where developers are called upon to talk about their products, share news and more.
If you are a developer or hold interest in listening to developers and about new products, you should definitely attend or watch the event.
If you have not been invited to the event, you can still watch the event live online at YouTube. The latest Google Campfire One event is happening today, 9th March 2010 6PM PST. The event is being broadcasted live on YouTube, you can watch it by visiting http://www.youtube.com/googledevelopers