WPF/silverlight - Is there any simple 2D Game/Physics engine recommend?

I would start to 开发者_C百科write WPF and Silverlight 2D game, i would to find some game engine library,the only one i found on google is FarseerPhysics ( http://www.codeplex.com/FarseerPhysics) and seem quite good. But is there any other recommend for starter?

And one more question is is it any alternate software of expression blend for create Silverlight UI?

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See also the Physics Helper for Silverlight, WPF, Blend, and Farseer.

Kaxaml is a lightweight XAML editor with split view.