Good afternoon,
one of my expectations as a Software Developer in 2010 is, that the WCF RIA Services for Silverlight will become a huge thing. So I did some research, and found a nice webcast by Ronnie Sauermann from Microsoft Switzerland. I met him during a project I did last summer, and he has a very good way to explain things. check it out! I unfortunately found no way to directly bookmark the video. So click the link and navigate down to Ronnies Video about RIA Services.
Video from Shapes ‘09 about WCF RIA Services
WCF WIA Services Januar 2nd 2010