Sometimes I wonder if I'm the only person in the world that didn't think TBC heroics were hard. Although, I guess my experience is kinda skewed being in a Naxx guild in vanilla, and leading my own guild through all the content in TBC. The only one I remember having any gripe with was The Botanica, which I think was more because it was long... and boring... than hard. (wow... what a string of words that was... huehuehue)