It's only available to those in the Xbox Live preview program
at the moment, but you can officially add the Xbox 360 to the list of platforms that offer access to YouTube videos. Beta participants should be now able to download the app from the console's new Apps Marketplace, and find all the usual personalized features you'd expect from YouTube, plus the Kinect controls you'd expect from an Xbox app. Still no word about a roll-out to everyone else, nor is there any word on a firm release date for all those other new video services
slated to hit the console (they're still just promised for "later in December").