Michael Scherotter has written a great overview of his workflow for adding Silverlight-based video to his site. I also hadn't seen the video of actor/rapper Ice Cube talking about Silverlight and their latest venture, UVNTV.com and all demoed on a Mac. Pretty wild.
Synergist : Encoding Formats for Silverlight Video
Disclaimer The opinions expressed herein are my own personal opinions and do not represent my employer's view in any way.