Getting Started with NHibernate

I just found a good video introduction to NHibernate over at dnrTV created by Oren Eini (aka Ayende), who is an active NHibernate contributer. If you're an NHibernate pro, you probably won't find anything you didn't already know. I usually use Castle ActiveRecord instead of just using NHibernate directly in order to get a sizable productivity boost, provided the project is small enough. When a project is sufficiently large or complex (multiple client applications, large model, difficult mapping, etc), I believe that skipping AR and going directly to NHibernate is the way to go. It helps keep your laying cleaner by reducing coupling of your application services and the persistence mechanism.