… Just a few links, waiting for 2010:

Steve Fox’s blog post – http://blogs.msdn.com/steve_fox/archive/2009/02/15/silverlight-sharepoint-services-oh-yeah.aspx

Silverlight Blueprint for SharePoint – http://www.codeplex.com/SL4SP

Kirk Evans’s  screencast that shows how to call the Lists.asmx web service from Silverlight – http://blogs.msdn.com/kaevans/archive/2009/04/28/sharepoint-for-developers-part-4-consuming-sharepoint-web-services-from-silverlight.aspx