XAML Design Tools from Microsoft
If you’re a designer looking for XAML design tools, and you’re a designer type (you know — beret, turtle neck, a wardrobe that extends beyond jeans and t-shirts), you’ve got two choices from Microsoft. You can use Expression Design  for static XAML graphics or Expression Blend (aka Sparkle) for dynamic XAML interfaces. Both are available in pre-release form (CTP for Design and Beta 1 for Blend), so give them a try.
 “Expression Design” is not to be confused with “Expression Designer”, which is the old name for Sparkle (Blend).
P.S. Can someone give Scoble a hug? He’s obviously a little worked up if he’s recommending physical violence for disagreements about web site design. : )