A nice 2 hours long video with demos and Scott Gu!
Though I am scrathcing my head, Silverlight 4 RC is out and Blend 4 is on its way where we have just got our hands on Silverlight 3 and blend 3, either Microsoft didn't plan it well or they are too agressive, too agile.
http://www.product-reviews.net/2010/03/16/microsoft-mix10-windows-phone-7-and-silverlight-4-video-demos-in-full/
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"For all of you who missed Microsoft’s keynote speeches at their MIX10 event in Las Vegas this week, it is good news – as we have the entire video to show you, detailing key features for Windows Phone 7, as well as Silverlight 4.""
