I started playing around today with ADO.NET Data Services, and all the examples I can find use the Northwind database.  I never noticed it until now, but Northwind is not installed automatically any more.  And it also was not easy to find the database online.

I did find a script to do this at this site.  Thanks Jon!

And for good measure, you can get the AdventureWorks database files here on CodePlex.