Silverlight doesn't only brings a rich experience to SharePoint 2010 but it can also play a functional role in it. To most people this means Silverlight-based web parts. But Silverlight can be more than that.
Silverlight apps can be integrated in all SharePoint artifacts like navigation, master pages, app pages and custom field controls.
This session demons how to integrate Silverlight in a custom field type and in a custom list definition.