Black Hat DC's earlybird registration rate will end January 1, 2009. so consider registering soon for the best rate. You can register online here:

https://www.blackhat.com/html/bh-registration/bh-registration-dc-09.html

or learn more about the event here:

https://www.blackhat.com/html/bh-dc-09/bh-dc-09-main.html