Windows Azure Conf is the event by community for community and focuses on Windows Azure.
Ok, its hosted by Microsoft but it is still awesome and Scott Gu is going to do a keynote.
This will be streamed live on Channel9 so its a great opportunity to learn Windows Azure from the experts. All of this for free.
What are you waiting for? Go register @ http://www.windowsazureconf.net/
You can get the ics file here.