Pretty vague question here, but have any casters noticed any significant resist levels on any raid level mobs? I haven't personally noticed any, but I figured I'd ask..maybe those of you who track your combat logs more heavily may be noticing it where I am not.

I've only noticed it on some mobs between opera and aran in Karazhan, specifically the arcane robots and some of the shades up to curator (I don't remember the exact names). According to my parsing they have on the order of 100 resist. All other mobs that I've seen and bosses just have the usual 2% per level partial resist that can't be countered.