This was one of the finest episodes of Bones ever, if not the best-ever.
I disagree with the other reviewer that the transformation of Brennan was too rapid. I feel this episode solidified in many ways how Brennan has been portrayed this season. For instance, she has been trying (in many painful, awkward ways) to loosen up and develop a sense of humor. We have seen her relating to Jersey Shore types and children-show hosts, really trying to stretch her personality. When a person is ripe for a melt-down or just receiving little hints from the universe, it happens.
It also helps to have a guide. Enter Micah. "When the student is ready,the teacher appears". The great Enrico Colantoni just might have a new semi-regular spot on this show! The scenes between him and Deschanel were fantastic.
This was one of those stand-alone episodes we will remember for a long time. Nearly perfect.
I could go about the philosophical and psychological aspects of this episode for hours, it was that beautifully written.