Just got a chance to hear Rocky speak this past week on CSLA. Lemme tell you; the guys seriously knows his stuff. He makes some great cases for the decisions he made while writing the framework...things like why we use string literals in some places, how the no-inlining attribute affects CSLA, etc. Excellent, really.
But, most valuable of all, he explained what CSLA does for you that you don't even know it does while it does it. He also evangelizes his approach to building software (for example, letting the BO drive the show, having very well defined logical boundaries between the layers....).
Honestly, if you get the chance to hear him, I'd recommend it. I was very pleased to get the chance to hear him discuss CSLA for the four hours we had him. Excellent!