I've had a chance to partner with Live Nation and the folks at Sasquatch for multiple years working on the festival website. This is a big undertaking, and one that I am very proud of. I've done the redesign of the site, as well as managing massive amounts of traffic to the site when announcements are made.
This site has been a challenge and a reward, as I've been able to solely manage such a high profile site. Of course the artwork was done by talented artists rather than by me, but I've had a ton of fun putting it all together and seeing it be a resounding success.
My specific roles for the site each year are server management & maintenance, front-end web design, backend content management, and applying each year's theme to the site to give it a unique and special look and feel.