I've enjoyed the heroic daily quests recently added to WoW. In addition to the new badge rewards, they give me a reason to run five-player dungeons again, which is really one of my favorite parts of the game. While some of the quests have led to frustrating situations where the group is trying to learn the strategy for a heroic dungeon that none of us have attempted before, most of my experiences have been good ones.
One downside of the random nature of the quests is the fact that the same dungeon can be selected several days in a row. On my main server, Auchenai Crypts has been selected three times over the last four days. This dungeon was considerably nerfed in the last patch, but some of the encounters are still annoying and many of my guildmates have expressed their growing distaste for the instance.
Have you had much repetition in the new daily quests on your server?