The Church has sent a legal threat to Gawker as well, alleging that hosting the video infringes copyright (amid a host of nonsensical allegations about "receiving stolen property"), but Gawker's refused to take the video down. Instead, they've taken the ballsy stance that this video is posted for the purposes of news reporting and analysis, making it fair use. I hope they stick to their guns. Link to video, Link to legal threats from the Church of Scientology (Thanks, Gareth, Ryan, and Siva!)
Update: All (?) of Tom Cruise's Scientology videos here (for now) -- thanks Xeni!