Did anyone else find the Broodmother extremely difficult? Haven't seen her mentioned at all, but in my opinion she was the toughest fight in the entire game. She was the only boss I had to switch to easy to beat.
 
I ended up beating her by standing up the back of the room near where the minions come in. I had my casters as far back as possible, with Sten and Oghram infront tanking the tentacles/minions.

Ah, maybe I was just way underlevelled for the fight. I think I fought her around 12-13.. might have been what caused so many issues.

I just took down the broodmother today and that ugly (holy shit ugly!) mother.. I had a little trouble with, but I actually got her down on my second attempt. In the end, it was just my main and Alistair (use him as my tank) for the whole second half. I've no idea how I pulled that off. It was awesome though :-P As for level.. I was level 13 so I don't think it was level range. The stuff scales anyway right?
 
The one fight that I have had to turn it down wasn't even a boss fight, but rather:  (Redcliffe quest line:)

I am only just starting out in the game (maybe 6-7 hours) but I haven't run into anything at all I would say is too difficult. In fact I have been waiting for the challenge to amp up a little bit. 

Beat it on hard second try, first try everything fell apart when the darkspawn adds showed up, and proceeded to turn the fight into a giant clusterfuck. Second try, Kill tentacles, Beat on Broodmother, Kill Darkspawn, repeat.
 
Having 2 casters with cone of cold helped a lot.

Beat this fight by simply casting Blizzard and Inferno on the Brood-Mother and having everyone whack on her with mage healing. Worked pretty well but I was definitely a much higher level at this point.

" Did anyone else find the Broodmother extremely difficult? Haven't seen her mentioned at all, but in my opinion she was the toughest fight in the entire game. She was the only boss I had to switch to easy to beat.  I ended up beating her by standing up the back of the room near where the minions come in. I had my casters as far back as possible, with Sten and Oghram infront tanking the tentacles/minions. "

I got her my second attempt.  I just moved my fragile characters away when tentacles popped near me and killed all the adds before focusing on her.  I ended up with two waves of darkspawn adds and two sets of tentacles, very easy to do once I saw how the fight worked. 
 
@Rhaknar: Really?  I thought he was pretty easy... I let shale and my rogue die and just focused my spirit healer on keeping herself and the protagonist up and beat it on my first try.  The ballista actually felt unnecessary to me as I had so many npc allies helping (leaders of all the factions I recruited).  It might have just been I was uniquely specialized to take on that fight.

" I got her my second attempt.  I just moved my fragile characters away when tentacles popped near me and killed all the adds before focusing on her.  I ended up with two waves of darkspawn adds and two sets of tentacles, very easy to do once I saw how the fight worked. 
 
@Rhaknar: Really?  I thought he was pretty easy... I let shale and my rogue die and just focused my spirit healer on keeping herself and the protagonist up and beat it on my first try.  The ballista actually felt unnecessary to me as I had so many npc allies helping (leaders of all the factions I recruited).  It might have just been I was uniquely specialized to take on that fight. "

Had no problem with the brood mother; killed her first time.
 

I found her to be a little overwhelming at first, but I got her down on my first try.