Man, all of them were awesome. I don't know where the haters came from.
A few of my fave:
-When he killed the Kiri Ninja.
-When he killed Konan
-Saved Sasuke and declared war on the world.
-Stabbed Madara
-Became the Juubi Jin
-Sacrificed himself for Naruto
-Gave Kakashi Susano'o.
Yeah, it was a great twist too, I didn't see that coming but that might just be me.Becoming the Juubi Jin was badass. Really loved that part of the manga. Kishi did a good job at emphasizing the danger of Juubito more than he did with Juubidara imo.
I loved Obito when he straight up slaughtered everyone from Kirigakure.