Overall, I liked the episode. Like others, I was disappointed at the lack of a return by Cuddy. The retrospective was also excellent, although I was having a hard time trying to decipher the existence of the clown.
The one thing I never understood: Knowing that House was supposed to be an homage to Sherlock Holmes, and in ALL of the seasons...we've never seen House's Moriarty
. Someone of equal cunning and intellect who becomes the bain of his existence. Now, granted, Holmes solved crimes and House...well...didn't. And yeah, we did have Tritter and before that was Vogler, but neither of those guys could really measure up. I think they missed a big opportunity to send this final season out with a bang.