Let's see, favorite moment? I love the scene in the manga where after Naruto is taken out of his Kyuubified form, Sakura attempts to heal him. There is just this look of heartbreak on her face, as she feels as if she can still only do little to nothing for Naruto after those years of preparation. Then Yamato, reveals to herr that it not what she does for him, but how strongly she feels about him. Then Sakura has this surprised, startled look on her face, as if he knows what he was talking about.
Believe me I hold nothing back, but I do believe that Sakura's feelings are gradually progressing to more than a friend to Naruto, otherwise Kishi wouldn't keep interrupting the scenes.
I totally agree with you, if they were merely friends then I believe it would have been a waste of time for Kishi to interrupt those scenes let alone having those scenes with Naruto and Sakura in the first place.
Anyways, my favorite NaruSaku scene is probably the promise of a lifetime...if you do consider that a NaruSaku scene.