As the title states, what anime do you dislike but everyone seems to like? Ok you don't have to hate it but hasn't there been an anime that everyone LOVED but you thought was just ok or you just not interested on it.
I myself never interested Ouran High School Host Club. I tried to watch it but I never even laugh, even in full four episodes of it. I don't know how to describe it. Just I am not the target audience of the show. In other words Ouran wasn't overrated or overhyped but overpraised. It just get too many merits that it don't deserve.
School Days is also another anime I have no interest at. I knew lot of people dislike it too but there's a huge fanbase of it. I dunno why. In my opinion, School Days is the Mortal Kombat of the anime world. Mortal Kombat become one of the most successful games not because of its graphics or gameplay but controversies behind it. This same goes to the (in)famous "Nice Boat" scene in last episode of School Days. Let's hope there will be no second "Nice Boat" in 2008 anime.
Any anime that just too dark like Jigoku Shoujo, Higurashi series and Elfen Lied. I just too optimistic to enjoy such shows.

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Most of the "normal" anime fans really like highly mainstream//heavily televised//never ending series such as One Piece, Naruto, Bleach, Inuyasha, etc. I just don't see why most of those are all that great. Maybe it's just me. T_T.
Oh geez. Don't go comparing just anything to Mortal Kombat. Instant and complete defamation.
EDIT: WOW. I totally forgot about stuff like Pokemon, Yugioh, etc. Maybe the Japanese versions are better, but the dubs of those are sooooooooooooooooooooooooooooooooooooooooooooooo incredibly bad.
There are others too, but I can't think of them right now.
Personaly I hated the hype about School Days. Sure the game has it's bloody moments too but they've totaly overdone it. And every Otaku who says "nice boat" to me can have a kick for his/her bad taste pff.
Other shows I can't myself force to watch are Clannad (as Demian nicely said on his blog "Keyches", had enough of them; I still watch it but for the jokes), then Higurashi since I'm just absolutely no horror fan and find this anime rather disturbing - something I don't want to have in my free time de arimasu.
What else, hmm. Ah right, PaniPoni Dash bored the hell out of me, Rozen Maiden also was never my thing. And finaly, Suzumiya Haruhi. Yes this "mega show". I found it OK, even have the first DVD of the US special edition - but I didn't find it that absolutely great. The mixed episodes just annoyed me and the fact that the series was just too short. I read the first 2 volumes of the novel (awesome, go read it now de arimasu!) and there's just SO much they still can put in the anime..
And to close this post of complaining finaly I totaly dislike all the Lyrical Nanoha stuff (go away with this magical girl crap, it's ANNOYING de arimasu!) and the legendary Neon Genesis Evangelion is just average in my opinion.
Evangelion was good but everyone needs to get over it and watch other stuff. Love Hina and Chobits can both die since the manga versions are so much better. (Spiral fits in that category too).
Azumanga Daioh never managed to hook me in, and I was severely annoyed when AMV Hell 3 was made up of 90% clips from it. Trigun also never managed to grab my attention. Wolf's Rain is pretty popular but I lost interest in the characters and I hate post-apocolyptic stories. Everyone seems to like Gundam MS Team some-number-or-other but I still stick to Gundam Seed as the best of the series (and, apparently, I'm one of the only people on the internet that feels this way).
Oh, and for oldies I never liked Cat Girl Nuku Nuku, nor Robotech.
And does it count that I hate Megatokyo too?
Anything that completely lacks a plot point, or anime where characters "reset" at the beginning of each new episode I won't watch.
I was speaking in the sense that melee combat is the backbone of the series.
Today I watched the raw of the last episode of Aria the Origination, damn, that made me sad..
As for Elfen Lied, I'm no fan of those gore/ splatte type of anime (that's also why I never watched Higurashi, ok, no horror fan either). The Elfen Lied manga is really though, one of the cruelest stories I know.
Gave me that terrible feeling in my stomach...so did the manga..
Basically highschool drama x20.
And Makoto sleeps with everybody (he deserved to be stabbed)
The game is 1000 times better. Still bit dramatic though and some endings are really bloody.
All in all this isn't my type of game and in my eyes it absolutely doesn't live up to it's hype in my eyes.
The One Piece or Naruto manga are pretty good and each week I'm reading the latest chapter.
Trinity Blood, Gantz or Blood+ I didn't like too. I'm absolutely no horror fan to add. I like horror elements in games (ah, Elma in F.E.A.R. is so sweet :inluv:; or the Ravenholm level in Half Life 2, awesome).
That's also why I never liked Higurashi or similar stuff.
"...we don't go there anymore....trust me that gate is sealed for a reason"
And it was a damn good reason....F*king fast zombies...and a crazy Priest.
Half-Life (best game ever made) wins in horror.