Miguel de Icaza and his team developed Monlight ... a "Linux Silverlight implementation".
Silverlight 1.1 (http://silverlight.net) is a new development technology for the Web created by Microsoft based on the CLR that augments it with a 2D retained graphics system and media playback engine and ships a subset of the standard .NET libraries.
Anyway it seems are in some beta but the program look nice ... Just check out this video with "Moonlight Surface"
Also you can check this Surface Parody :)
And a Windows exception on Surface