Well, it was not much of a crossover, but this was still one of the best episodes of Private Practice this season. It took me back to 2007 when the show was so fresh, until the writer's strike and sophomore slump killed some of its momentum.
We had two very powerful storylines and there really was not a dull moment throughout the program. Paul Adelstein gave his best performance yet as Cooper and we saw the line between medicine and love crossed (okay, we get that on every episode, but still).
I do not like that Sheldon character, but that's about one of the few flaws I can find with this episode.