Ayende Rahien gave a workshop at Kaizenconf in Austin, Texas on October 30, 2008.

Workshop Description (from Dave Laribee's original post on the workshops):

Object relational mapping are becoming only more popular, as people developing complex systems find that they need more than the tabular model to work with in their applications. A sophisticated ORM can do a lot more than merely get the data out of the database in object form, it can be a valuable asset in simplifying development and making things possible. In this session, you will see how you can utilize an ORM in nontraditional ways to get an additional, better, approach to solving complex issues.

Some of those ways include business rules, localization, state transitions, inversion of control, etc. All done via the ORM layer, and all can be used to drasticly simplify the complexity of the given scenarios.

Video of the presentation:

Ayende on Advanced NHibernate - recorded and produced by Dave Laribee (approximately 2:30 hours).  Note from Dave: "Sorry, but Ayende is a little quiet in it; the microphone didn't pick him up all that well. Dial your volume to 11"

Relevant Links:

KaizenConf Workshops - Advanced NHibernate - blog post by Ryan Kelley