I love how he can make such an important contribution coming into the came from prior fitness concerns. Practically his first touch of the game gives us a win.
I think he (maybe Barzagli and Buffon as well) is the one player we absolutely cannot afford to lose in the long term. He makes everyone around him better.
I still feel that we (fans) underappreciate him, if Milan had someone like Marchisio they would PR the shit out of him, not that I want us to do it. But we should recognize how special this guy is.