1. Read here about ADO.NET Entity.

2. Walkthrough: Creating a ReportViewer Report. This walkthrough shows how to create a simple table report in a Microsoft Visual Studio 2005 Windows application project based on the AdventureWorks sample database. You will add a report template to your project, set up connection information for the AdventureWorks database, define a query, add a table data region, and add a ReportViewer Windows Forms control to a Windows Form so the report can be viewed by users of the application.

http://msdn2.microsoft.com/en-us/library/ms252073(VS.80).aspx

It would appear that intermediate objects have to be written to use the EF in reports. I was hoping to avoid that at least in some simple cases.