From all of the quests that I have complete my favorite so far has been the Blood Legacy quest, especially the begining having to ask around and use your Lore/Perception skills in dialouge.

 

My least favorite is Farmer's plight. The whole ordeal of going through a cave system of spiders and then to find out he's not to blame is kinda bland. Not to mention the whole thing is over a pig...

If you ask about the pigs it's pretty clear that the ogre is to blame for that one. He punches the wall and says that he had no idea farmers cared so much. Also if you click on the pile of corpses to the left it hints that the ogre has been munching on random passer-bys.