I'm honestly surprised that no one has brought this up, but the fan-service-y scene that got on my nerves the most was the scene in EoE when Gendo sticks his hand in Rei's breast to initiate Instrumentality. No matter how much you argue the validity, he honestly could have joined with her by touching her anywhere.
This scene also kind of irks me, but for a slightly different reason. It's true, he probably could have touched her somewhere else. When I watch it I hear a loud voice in my head screaming "there is a reason for it!" and a quiet voice whisper "no there isn't."
The argument that this is fanservice is supported by more than just the brief fondling, I think. When Gendo's hand descends toward's Rei's crotch, Rei's response, a small recoil and a pained sigh, almost seems sexual. Still, the fact the scene contains evidence that it might be fanservice as well as evidence that it was intentionally made ambiguous leads me to believe that it has a some meaning beyond simple perversion, and is thus justified as a means for expressing an idea.
When I see the scene, my stomach churns for two reasons. One is the fondling, and the other is the image of a guy sticking his hand inside a person and rummaging through their flesh and organs like it's no biggie. It's a shocking image that leads me to have even more shocking images flash through my mind. Really, this is one of the scenes that legitimizes statements that Evangelion mind-f***s everyone who watches it, because that's exactly what this scene does.
What I'm trying to say is that the rawness of the scene completely thwarts any possibility of it getting a perverted rise out of me. I think Anno sought to elicit my reaction in all viewers. Because I believe he planned this all out, I don't think it's fair to call this fanservice. If anything, it's a bait-and-switch manuever, and I wouldn't even call it that. The bait, seeing Rei's boob grabbed, isn't really all that hot considering Gendo is the one doing it, he's doing it with that characteristic grimace on his face, and the environment in which it all takes place is completely unnerving and about as un-sexual as any environment can possibly be. There's a bleeding, semi-morphous blob of who knows what crucified right behind them. It's definitely
not the place for sexy time.
"Mankind fears the darkness and scrapes it away with fire to survive." -RikkyRikky Rei Ayanami