There are some Achievments that require you to go fishing in Orgrimmar, where you will most likely be ganked by players or disrupted by city-guardians.
Old Crafty - Achievement - World of Warcraft
The Fishing Diplomat - Achievement - World of Warcraft
i think there is another achievment but i don't find it at the moment
The easiest way to do them now is during the Wrathgate Questline, when you aren't attacked by horde in orgrimmar because you are supposed to help them during this quest:
Fate, Up Against Your Will - Quest - World of Warcraft