Stole this from the US forums, brought some good nostalgia :D
DONT turn this into a flame fest of the quest designers
More its to remember some of the nightmare quests that we for some reason kept doing even when we didnt want to :D
Satyr horns in ashenvale. Ladies and gentlemen, THIS is a bad drop rate, and you need bloody loads of them

Main one though - warlock felhunter quest
Dunno if it is the same for alliance but:
Murloc camp in hillsbrad, then all the way back to the other continent to a centaur cave in thousand needles.
Then all the way back over to the other continent, to bloody wetlands, which is a nightmare for horde as you have to run all the way through a 30 - 40 zone and into a place with no FPs... Then back to Ratchet, again on the other continent

I wanted to slam my face onto the desk

The quest in Howling Fjord where you need to collect 8 (10?) feathers on the ground in the northern part. That sucked. A lot!

City of Light.

On 3 chars.

*shudder*

ALL escort quests.

Killing Defias Pillagers :(

Son's of Hodir rep dailies in general. Especially the horn of hodir and spear of hodir quests.

The Horde one which requires an Aged Gorilla Sinew at around lvl 40 in STV was annoying. 1st char got it 3rd kill, 2nd char 111th kill, 3rc char was around 40 kills and so on. Not fun.

Anything involving Murlocs had a personal place of hatred for me.

There can be only 1 choice for the most annoying though....

The final(? my memory fails me) quest in the Onyxia attunement in it's original form where 1-3 blood dropped from Drakkisath in UBRS and anyone on the quest could loot them even though they were green. For some reason Blizz decided 1 each was a bad idea and that allowing us to roll for them through group loot was also a bad idea.

Took soo many runs to get that damn blood because of people ninja'ing....

Jail break at 60 in a pug...

Another +1 for SoH dailies.

They suck. In five quests there isn't a single one that's remotely enjoyable, unlike the Frenzyheart dailies which at least have some element of fun.

Following that wolf around while it blindly runs in to worms that it ignores until you tag them. I say get a better wolf that can actually sense danger ahead. Competing with eleventybillion other players for five giants, only to have DKs death grip the one you're rushing towards. Killing revenants that give you a headache with the strobe lighting when they die. And gripping the dragon is way too buggy.

I'll be so glad when my rep with them is done.

Changing the Wind's course in the Storm Peaks. How does that Tauren stand a snowman's chance in hell of actually surviving on 3 crappy moves. Seriously, my Death Knight does more damage than he does by a long way, and i'm not yet lvl 80 with DPS gear.

+1 for Sons of Hodir.

No comparison with Oracles (best dailies except killing wolvars) or Kaluak.

The one near stromgarde where you have to have to get the three keys of binding, and each circle is surrounded by elementals.
The quest itself was not hard, but I think this might be shared quest since every time i killed enough elementals to get to the stone, i would be on low health and an alliance player would appear and kill me.
By the time i got back there, they key I was gone after I had done the corpse run..grrr....Happened twice heheh so I had to go do something else while waiting for respawn. LIke i said, not the quest itself, just the annoyance of it!
Mind you, i did get some nice elemental stuff to put on the auction house for a few gold!

Argent Crusade Daily - Slaves to Saronite. Just awful!!!

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Q u o t e:
Anything involving Murlocs had a personal place of hatred for me.

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You're not the only one, even when they don't run off they have a habit of pulling every other murloc within 50 yards into the fight. Ever since I first did that awful Southshore alliance quest almost 4 years ago where you have to collect 10 murloc heads have I detested the damn things, quite how murlocs had a less than 15% chance of dropping a head god only knows since every one of them had one on their shoulders when I was killing them.

Which reminds me, the worst quests are those that require you to collect something off a mob that in theory they should all have. Newcomers to WoW soon learn basic things like 90% of the Goretusk in Westfall don't actually have a liver. Also a special mention for those Winterspring Yeti where unless you were a skinner it'd take what seemed like 2 hours to collect 10 thick yeti fur.

Of the quests in Northrend one that sticks out is the one where you have to use the firecrackers to get the bats out of the trees, the firecracker never tagged them as your mob so it wasa fre for all to loot. Any quest that involves collecting poop is annoying too, it wasn't funny the first time so why keep repeating it.

Gorilla sinew in southern STV for me, my warlock got 42 000 experience from that quest...never again.

the one in Zul Drak which involves taking one of those fat constructs as a pet while in diguise as an undead, then using the thing to kill 60 trolls, except when I did it everytime I got the blobby pet and was about to go use it my disguise broke and I had to start the whole training again or ended up being attacked by 10 trolls and the pet at the same time.

In fact theres several others around Northrend along the same lines, and I hated doing all of them.

Hemet Nesingway ones in Nagrand and its where im at now :S

The Zul'Drak quest line where you use the Scourge digsuise.
Did most of them today, got to do the last one.
I died quite a few times because I aggroed the wandering red mobs.

Satyrr horns in ashenvale is bad.
So if that one where you have to kill 700 murlocs for a glowing gem.
Hellfire Poop quests
Sons of Hodir dailies