I’m a big fan of Entity Framework
[http://www.nuget.org/packages/EntityFramework/5.0.0] (Code First
[http://weblogs.asp.net/scottgu/archive/2010/07/16/code-first-development-with-entity-framework-4.aspx]
, aka. Magic Unicorn Edition
[http://www.hanselman.com/blog/EntityFrameworkMagicUnicornAndMuchMoreIsNowOpenSourceWithTakeBacks.aspx]
), and in particular I am really beginning to like