Tavern brawls is a standing promise. Tjek out Q:14:
http://www.gamesas.com/topic/1207390-skyrim-fan-interview/
I'm still waiting

Well, even they do it all it will be a scrip that will pop a fight when you enter, and it will be boring again after a while..
What they nood to do is first assing a ambience sound to it, like little crowed noise you know.. And some fights, drunken people, eating people, speaking people, npc's should be able to order songs from bards, and at least one of these stuffs should be happen when we enter a tavern so it wont feel like it is scripted, and it should be based on a roll on npc's, a disposition system like oblivion would be nice;
Like x npc doesnt like drunked people, so when a drunken marked npc appear he got a roll to atack him, and every npc that hang ou in tavern have a number that detect how will they react to threats. Like if y's number is bigger than x's number than y will fight back, else flee.
Also there really could be minigames in game, like in witcher.. a card game, dice game..