If you didn't make the MIX conference or were unable to attend a session that you wanted (because you were on a winning streak at the table or playing Guitar Hero 2 in the Xbox longue), you still have an opportunity to view all the sessions as they are posted online. Just go to http://sessions.visitmix.com, select what you want to view and then download each recording in your favorite video format and watch the session in Windows Media Player, on your Zune, with your video-capable iPod, or even using the brand new Microsoft Silverlight technology.
Enjoy!