Silverlight is launched, Is a web-based Windows client closer than we think???

So we finally released Silverlight 1.0 and I have to say I am really starting to get excited about its potential.  We have several partners on board that are doing some cool things with Silverlight.  Many of them are media companies who are doing online video content.  We have also partnered with Home Shop Network to deliver HSN TV online.  By far the coolest thing that I have seen at www.silverlight.net howeve might be a virtual Windows Vista Demo done completely in Silverlight.  Check it out here http://www.windowsvista.si/main.htm .  It sort of begs the question how far awa could a web based windows client be.  Keep in mind the above demo is only a simulation but the potential is there an its sort of exciting just to think about.