I'm certainly not the first to post about this, but it looks like Drupal will have a strong showing at SXSW Interactive 2009. There's even a front page post on drupal.org to bring awareness. A group of us from Lullabot went last year and we had an absolute blast. If you haven't been, sign up now!
Looks like there'll be lots of Drupal in Austin next March... even http://sxsw.com/ is Drupal powered!
My hotel is booked. See you there!