I dunno what fan service means....

Mostly gets on my nerves >_<.

When it's done, it's usually overdone. I tried reading Zero no Tsukaima, but there it was, first page, a loli-panty shot. I tried to ignore, it, but there was another panty shot once every three pages if not more often. It made it impossible to appreciate.

It also ruined Negima! for me. I mean, a few cases of fanservice are understandable, but throwing in panty shots just because you can as opposed to doing it because it's a funny or sexual scene is bad.

I like fanservice in omake sections where the mangaka is having a good time with her characters and her readers. Then it's not just pandering to drooling fanboys/-girls but really just an expression of humor.

In most generality I ignore Fan Service. While I enjoy some of it (cute faces, handsome guys) I dislike the sexual fan service and try to avoid it at all costs.

I'm fine with it in moderation.

If we`re talking sexual fan-service, then I say a whole-hearted NO. It takes the from the story, imo and turns the characters into shallow one-dimensional things. I don`t mind female-chars that look cute and have a nice line or male ones that are handsome and buff - the human body is indeed a thing of beauty, but when we see breats, waists thinner than necks and behinds all over the place combined with extra-beefy guys (makes you wonder how they bend their arms), I think we can all agree that has to stop...

i dont mind the odd panty shot in anime but it depends on how they present it. if its done in a tasteful, humorous or tongue in cheek sort of way then its fine by me. if its done gratuitiously it has to fit the overall theme or concept of the story ie; stories with lowbrow or off the wall elements. but this is just my opinion....

I think people often forget that fan service does NOT have to be sexual. Yu Yu Hakusho, for example, had a scene where Yusuke's gang was in the tournament, and they were arguing over who will fight this particular opponent, and they ultimately picked the member by a game of Rock Paper Scissor.

The anime version inserted a cute little scene in which Kurama had to teach Hiei how to play RPS because he wasn't familiar with the game. On their first round, Kuwabara won, but he cheated and was caught by Hiei. Kuwabara was shocked that he was caught by a beginner like Hiei, and Hiei responds by (super seriously and fiercely) telling him not to underestimate the power of Jagan.

I consider that scene a good example of non-sexual fan service. :3 Harmless little extra that doesn't add to the plot, but may entertain the viewer. I really liked it.

As for "sexually appealing" fan service... I think it's fine in moderation.