Can you find ONE flaw about your favorite anime?

Bakemonogatari - I find it hard to criticize since I'm raging faggot for this series. I suppose my one criticism would be that I don't like how Araragi explains to us things at the end of each arc. Actually can't remember if he does...I know he does for Hitagi crab and it just feels a little lazy. But hey if it nice to have a plate of Exposition if it's served Hiroshi Kamiya (forever gay for him.)

Darker than Black - ....GOD DAMN IT, SEASON 1 MADE EPIC LOVE TO ME THEN SEASON 2 CAME ALONG AND SHAT ON MY FACE, WHY BONES? WHYYYYYY!!

Thats why we have hentai and fanfic lol

I actually thought that would be the end, but after seeing that I woulda just jumped out my window myself...
Last Exile: it *could* have been two seasons, just throw in a few side stuff that would have been cool, but more importantly, make the last episode 2, it was way to wrapped up.
Air and Angel Beats: 24 episodes would have been much much better

Spice and Wolf:
Too much economics that it bored me.

K-ON!!
Yui can be so freaking annoying.

But Tsumugi's eyebrows make up for every flaw that anime has

There is no such thing as a perfect series. Only mindless fans who are blind to their obsessions' flaws.

Anyways, for shows that I enjoy:

K-ON!- As Unsigned mentioned, Yui can be quite irritating.

Ichiban Ushiro No Daimaou - A great idea ruined by a limited run. Story could have been much better had they more time to flesh it out.

The Sacred Blacksmith - Same as the above. Such potential squandered.

H.O.T.D. - Matrix Boobs. The Fanservice gets outright ridiculous.

I agree, even though I still cried my eyes out over it. I felt that it was a bit rushed,

Plus, we didn't get a Kotomi OVA. I needed more "Bonjour!" :(

There is a fanfic on fanfiction.net when two thug rapes Yui and breaks her guitah~
(I wanted to ask the author to make a sequeel since the first chapter was a lemon with minimal sory, but I'm too lazy to make an account.)
Not that I'm a K-ON hater, I love that anime, but I want to see a shy, reserved Yui with a slight fear of guys. That would be an epic drama story.

Gintama - If you don't know a shit about japanese culture you're not going to understand the jokes
TTGL - Kamina's death
Tora Dora - I was supporting Ryuuji x Minorin... (But this is just my personal opinion).

Yeah. It was only six episodes long. ;~;

Hmmm, remembered some more favorites:

Samurai Champloo: plotholes like whoa, and it left a lot of things unexplained. But I love it anyway.

Code Geass: another one where I wanna go WHY WHY WHYYYYYYYYYYYYY. Sometimes it was because of plot holes, and sometimes it was because of certain events in the story. Oh, and it made me cry several times. T__T

Nodame Cantabile: Nodame can be fucking annoying. So can all the other characters. But somehow, overall, their annoyingness canceled out.

Cowboy Bebop: I really, really dislike Faye. Really do. But she is one of the better-made female characters in all of anime-dom, I'll have to give them that.

FMA : Brotherhood
Inconsistent artwork. But the story still awesome though.

Bakemonogatari :
Sometime, the pace is just too slow.
But then again, the storytelling method is a bit unique.
May be not appealing to some, but to be honest .. i enjoy it.

Angel Beats :
Not really my favorite. But the plotholes annoy me.
It need more episodes.

higurashi no naku koro ni
sometimes the animation is a bit weird. rarely

that is all

Samurai 7 - Although by no means the only one to do so, I DON'T CARE HOW WELL-CRAFTED KATANA ARE, THEY CANNOT DO THAT SHIT. TRY TO SLICE AND DICE AN ARMOURED WAR MACHINE AND YOU WILL FAIL AND YOU WILL LOOK POSITIVELY SILLY AND RECEIVE 88MM ORDINANCE TO THE FACE.

Initial D, not much story progress in all 4 seasons.
Drangonball Z - 291 episodes....
Mahou Shoujo Lyrical Nanoha- to less episodes /seasons.

And most of all: Death Note: the thing about apples....why..is ryouk eating so much appels...it has almost nothing..to do wit the whole anime.

code geass... the only thing i cant really think of that i didn't like is how the first two episodes of each season were near the same. or had many the same elements. was still really good but it seemed kinda off to me.

- Ergh. I can't stand series that go on forever. I really want to like Bleach, and I initially did, but at some point you just wanna GET ON WITH IT [/Python]

- Too short (ending felt really rushed), horrible pacing, and an absolutely terrible male lead. The rest of the cast is fantastic, but that guy is the worst of wimps. When he abandoned girls twice in the caves- that really clinched it for me- I just couldn't get myself to find any good points in the guy. Hell- I don't even remember his name.

There must have been a reason why they did that. I thought it was for people who wanted to watch and just started with the 2nd season.

Gantz-- What ending?.... :\ didnt explain anything at the end on what happened to the protagonists... other than that it was pretty good...i guess one would have to read the manga to find out the real story..

death note--

full metal panic fumoufou-- was looking forward to a little more seriousness other than that it was Ok.

TTGL--

NGE-- Ending with a morale and not for the story? well...atleast they finished it up with the movie...

Now and Then, Here and There-- There was an "epilogue"...but still wanted more :(

Umineko no Naku Koro ni-- I read the first episode in the visual novel and i was very excited because the anime recently finished, but when i saw the first couple episodes i was kind of sad that they "fast forwarded" everything and didnt really take time to develop the characters(for example they made Battler into a sort
of pervert without explaining his intentions of having done what he did(ep1?))

Love Hina-- Loved how they kept making seasonal bonus movies and an extra season, though too wished it were somewhat longer...

thats all i could think of for now...

Favorite anime of mine is tied between DRRR!! and Baccano!, so I'll just use those two.

Baccano!:
The last episode, or two, looking at it realistically, are pretty useless. Sure, they introduce another character, but he's only there for 2-3 episodes. I know it was there to be the denouement of the story though, so I don't really care. (I couldn't really thing of anything, tbh, so I just said that. Lol.)

Durarara!!:
There are still some things left to be asked, and there was one big thing that never happened that I was hoping for, by the end of the series. I understand that the series didn't finish though all of the light novels though, so it's also to be expected.