Here's a bit of information on this Wednesday's South Park episode, 1009: "Mystery of the Urinal Deuce", due to air on October 11th 2006 (10pm Eastern/Pacific, on Comedy Central):

The world's biggest conspiracy of all time will finally be uncovered when Eric Cartman exposes the true culprit behind the September 11th attacks. An attempted assassination in South Park means no one is safe from the people who are the real brains behind the 9/11 conspiracy. When Kyle and Stan hit the road in search of the truth, they come face-to-face with the masterminds who pulled off the most elaborate, intricate and flawlessly executed operation in American history.

Remember, the episode will be available for download (in both Real Media, AVI (Xvid) formats) from the site shortly after the episode airs in the US, just keep on checking this episode's page for updates.