MSFT Silverlight making some gains while taking a big hit this past week. Both CBSSports and NBCOlympics have impressed me with their respective user interfaces. I really enjoyed the text commentary positioning of the NBC Olympics player and I think the 'choose your own quality' buffering option on the CBS player is very clever.
As one that know exclusively only watches video online, I'll be watching with a keen eye on which video streaming solutions step it up. It seems to be that MSFT is pushing to target professional broadcasters while Flash has remained catering to the masses.