Building data objects in Visual Studio 2008 is really nice.  Having been a .netTiers veteran (and contributor) I have appreciated O/R Mapping tools for some time now.  I must say that the new Visual Designer is pretty neat.  I am working on a quick WPF / WCF application to manage a customer's orders from a simple database.  This tool worked out great for a quick 45 minute application.

My next step in this little app is to see how I can modify the O/R code template to write these classes as WCF serializable objects fully decorated with the DataContract and DataMember attributes.

EDIT:  I figured this out pretty quickly.  By clicking on the white space of the dbml designer and examining the properties pane you will find a serialization property.  Setting this to unidirectional is the same thing as using the /serialization switch on SQLMetal.  The result is a data class decorated with WCF compatible serialization attributes.

Spiffy!