Probably old news by now, but live streaming of PDC 09 is available here. The video is Silverlight based, and it's awesome to see how well Silverlight is handling it. You can rewind the stream almost instantly and when you zoom it to full screen it will adaptively update. On my 1900x1200 monitor at work I'd say its DVD quality or better.

If you're itching to see Cider in VS 2010, scan back to 1:30 in the video.