Definitely the most frustrating brawl I've ever had the displeasure to play... fun things that happened in the hour it took to get my first victory included:
Mage deck finishing the quest, and then (with a hand including a large number of cost-reduced spells and Varden) played the Golden Kobold to discard their quest reward completely.
Hunter deck being in a situation where opponent is on 2 health (with no secret up, so no chance of ice block as they already played three of them), and having TWO minions in hand that could do immediate lethal (one charge and a rhino that could trample into a small enemy). Hunter is on 8 mana at start of turn - so you could just use hero power to win. AI just skips turn, spending 0 mana, playing 0 cards, and attacking with 0 minions.
Definitely the most frustrating brawl I've ever had the displeasure to play... fun things that happened in the hour it took to get my first victory included: