The new Kyon from Nagato-chan makes me feel discomfortable, anyone else has this problem?
My best anime would be Yahari Zoku, that thing is just perfect and the animation boost was quite nice.
I guess a good h-scene makes you feel excited in some way or another. I would say that the most important thing is the situation of the scene and the CG since I don't really like vanilla.
Of course the voice acting also has an important role.