Jon Harris just published a 90-second introduction video on Expression Blend, this time featuring the new tools for creating Windows Phone applications. So, if you always wanted to know about Windows Phone application design with Expression Blend but you never could spare the time, here’s your one-in-a-lifetime opportunity 
http://www.microsoft.com/showcase/en/us/details/61ed7e86-0b1c-432e-a1fb-a882f95ec250
Jon’s first 90 second video, an instant classic on SketchFlow, the built-in prototyping system in Expression Blend, can still be found here:
http://channel9.msdn.com/posts/LauraFoy/Sketchflow-in-90-seconds/
