I am a viewer of The Mentalist, mostly for the casual and non provocative nature of the show. I am not expecting TV history in the making, and I'm not getting it.
It's straight forward entertainment, with a dash of good overall storyline and good acting from the main character.
That being said, this episode, and in particular the final scene, was one of the most powerful I've seen on TV in my entire life.
It didn't over dramatize it, it didn't make it awkward or corny. On the contrary its power came from the cathartic nature of that scene. Rarely do I get that moved. The scene and its actors gets a 10, the episode a 9 - total 9.5