Ever run into a bad anime you couldn't finish?

My list would be so bloated if it weren't for the fact that I could see the fact that certain animes suck right before it began.
I tend to avoid- harems, useless protagonist, and full fanservice series

Dropped
Haruhi- I can't stand her attitude though I did read all of the books.
Burst Angel- Dropped it when I found out the chef guy wasn't going to get any action.
Eden: Its a Wonderful World(manga)- dropped it when I found out that the rest of the series is going to get more and more depressing exponentially after the time skip.
To Love Ru- because its terrible
Black Cat- the anime made no sense what so ever
Bleach, Naruto, One Piece- its too long plus I have already read the manga.
Kaichou wa Maid-sama- not enough romance, too much comedy.
Shukufu no Campella- dropped it because it got so boring that I fell asleep watching it.
Queens Blade- I only watched the first episode to ridicule it.
Hyakkaryouran Samurai Girls- Its completely stupid with those girls jumping around chopping planes in half while the narrator is praising japan... oh and the fact that Sanada Yukimura is a loli who can't do shit.
Kobato.- didn't make sense to me
Tsubasa Chronicle- doesn't make sense
Gundam Wing- I couldn't stand the bad quality animation even if it was awesome for its time.
Samurai Champloo- doesn't appeal to me
Gintama- not japanese so the jokes don't appeal to me
NGE- its insane stuffs
RahXephon- NGE doesn't appeal to me.
Ranma 1/2- too many stand alones
Railgun- its just filler crap
Fairy Tail- too much stock footage
Bakuman.- reading a manga that is about drawing manga isn't very appealing
Loveless- after the first 10 minutes I realized its actually shounen ai.
Yozakura Quarlet- the plot is quite lame
History's Strongest Disciple Kenichi- somehow the animation makes the fights less epic.
GTO- Onizuka sounds like a little boy going through puberty.
Excel Saga- too random
Sengoku Basara 2- two much awesomeness decreases the awesome factor.
//.hack sign- the plot is too dragged out.
B Gata H Kei- the sex jokes get tiring after the 5th episode
Durarara- it just got too boring midway.
Canaan- it just doesn't appeal to me.
Darker than Black: Ryusei no Gemini- as everyone already knows it has a failure plot.
D.N. Angel- the squeaky voices hurt my ears.
Lucky Star- frankly, its stupid.
Fist of the North Star- its just too long, every episode is pretty much the same.
Pandora Hearts- it just got boring for me plus B-Rabbit is just plain fugly and its pretty stupid for everyone to call it b-rabbit.
Scrapped Princess- the first episode wasn't appealing enough.
Seikon no Quaser- the anime is just an excuse to show hentai.
Tsukihime- Nekomimi modo is stupid.
Sumomomo Momomo- the main girl is a loli who is obsessed with sex and the protagonist is weak.
True Tears- I just lost motivation to watch anime in general at the time.

I dont wanna ughhhh!!! Fine. I'll see what I remember~

Witchblade
Gundam Seed and destiny
Azumanga daiho
d. grey man
Aww...shit. These people are making a drop list. DX Damnit. I'm not dropping these I just never finished. Urrr...lets see..uhh..I guess you could say I dropped witchblade. I cant remember others~

I'm not prepared to make a list that long; I have dropped so many anime that Fakkus servers would crash just from the shear amount of text. Ok there's not that many but you get my point; I drop more than I commit to easily I'd say a 10:1 ratio.

-Lucky Star... it's like it tries to be fun... but it's not fun at all... and i really hate that...
-Bobobo... not because is bad, it's fucking awesome and really fun, but i only have watched a few chapters in Spanish from spain (the phonetics are really diferent from Chile spanish) and i don't like the voices, so i've dropped it till i found a jap + subs version also i can't stand english dubs.
-Urusei Yatsura... Same as bobobo
-Gun x Sword... got bored in chapter 8, i think i'm gonna give a 2nd chance to this one, because appears on Super robot wars, so it has to be good...
-Hana Yori Dango... can't stand the main character... she's really stupid
-Kampfer... The girls are hot... but the main Character is the 2nd most stupid main character ever.
-Kanokon... The most stupid main character ever...
-Makai Senki Disgaea... disappointing adaptation
-Ragnarok Online the animation... Oh, a Swordman+acolyte+merchant killing MVPS, this must be a high rates... No thanks...
-Shakugan no shana... Chapter 3... and got bored... thinking about giving a 2nd chance, because everyone says it's good and gets better later...

i think that's all...

More than I'd care to list but not as extensive as Gin's. I do some research on the director before I even start watching something. That usually brings down the amount of seasonal anime I watch. Occasionally I'll be proven wrong like I was with Bartender. My drop ratio is about 4:1.

Some of the ones that I remember quite well.

(Highlight the blank spaces to see the spoilers.)

Clannad - After Story - The forced drama at the end of the series ruined it for me. I do not enjoy forced drama in a well done anime, it leaves me unsatisfied and I would rather remember the Clannad I loved.

Dragon Ball Z - I watched six seasons of what was basically people yelling at each other. One day I decided to stop. Life got better.

The only anime I dropped till now was Kyoshiro to Towa no Sora. Though, I've only checked the first 2 episodes and didn't get a positive response =/

alot of animes, i cant name them off the top of my head tho

Lucky Star, Umineko no naku koro ni, Iron man, Higashi no eden, Pokemon, Card captor Sakura, Basquash, Arakawa under the bridge, Asura Cryin, just to name a few.

Bakuman cuz an anime/manga about making a manga and avoiding ur girlfriend is just not as cool as I thought it would b

Haruhi Suzumiya season 2- Endless Eight.
Bleach- I liked it, but I can't stand series that go on forever.
Pokemon- Same as above. I also wasn't 13 anymore.

Asides from that, I've liked most of the anime I've watched.

K-On. Nuff said.

One of the worst series of all time IMO: Akikan.

I mean, I thought the concept of soda cans transforming into girls and battling each other with carbonation was kinda novel and funky until I saw what terrible execution the actual anime had, in both art style and storytelling.

Terrible.

Highschool of the Dead is the only one I've actually dropped.
The pace of it was so slow that I couldn't stand it anymore.
Manga was far superior.

If it were a list of just not finished anime then that would be different.

Onegai teacher. I watched it a long time ago and lost the will to watch it again to finish.

Most of my recent(ish) drops are simply due to me loosing interest in it, not so much me disliking it...

Though some I can say for sure I won't (continue to) watch are-

Full Metal Panic! - obvious reasons
InuYasha - one of the first animes I saw, but simply not worth it to me to see all the way through.
Fullmetal Alchemist - Similar to the above reason
Lupin III - don't like the style


Many others, but I simply didn't ever watch enough to remember them

Anything with "shounen jump syndrome" I ditch. They're practically forever going... exceptions to the rule though is if the story is brilliant.

Shounen Jump Syndrome: An manga that has been published on Shounen Jump Comics which has been adapted into an anime. These animes are usually VERY long in episode count and are constantly bombarded with unnecessary arcs in order to fill up time for the manga to continue ahead.

Prime examples: Naruto, Bleach, One Piece

Just finished the 1st EP of Sora No Otoshimono and dont get me wrong its a good Anime but... Sigh, The main dudes voice is so fucking irritating and his actions are close to unforgivable! (He just drags it down into the abyss for me)

Ive never wished for a better voice actor/dub for an Anime more in my life. (He makes Makoto Itou sound like Isaac Hayes) >____>

Its gonna be seriously tough to finish this one if he keeps laughing like that! :(

Samurai Deeper Kyo and Bleach are the only two that come to mind atm.

Bleach is a new one on the list now.

hmmm...

Bleach/ Naruto/ One Piece - Too many fillers, and GOD do they suck.

To-Heart 2 - I liked the first one, not so much this one. It was like one of those tipical animes where the main protagonist girl has a shtick. Maybe Ill give it one more chance.

Shukufuku no Campanella - god it was boring, halfway through ep. 4 i was like "Screw This!"

Lucky Star - God this is... just not for me.

Clanad After Story - watched the first one, Liked it. Saw 6 episodes of After Story... I was So God Damned Bored/Annoyed... 12 weeks later saw Ep. 7, I was more annoyed than before. I guess Ill give it One more chance starting from Ep.8 since things pick up from there.

MM! - Jesus Christ im done with this show! saw Ep. 11 all the way through... Its practically the same Sh*t every week, Cant believe I saw 11 episodes of this! also Mio and yuuno piss me off...

The Melancholy of Haruhi Suzumia - what can I say, umm I hate Haruhi? YES! Thats it!!
I-HATE-HARUHI!