When Rock of Ages was a Broadway hit, I rolled my eyes. Hair metal turned into a Broadway smash? Kill me, said my punk rock purist attitude. When Rock of Ages was made into a movie, I anticipated Razzie nominations and mocking upon its release. This isn't a movie I should ever consider seeing, said my far-flung movie tastes. And this was coming from somebody who loves the movie version of Mamma Mia! I don't necessarily know what compelled me to rent Rock of Ages from Netflix, other than the fact that I tend to have dry spells. As in, I want to watch something I've never seen before, and I'm usually up for something different . . . even if it's something I initially found forgettable. No matter how many hair metal songs were in it. I embrace the fact that hair metal was a crucial element in me appreciating modern rock music when I was a kid. Songs like "Wait," "Here I Go Again," and "Carrie" might have been made into cheesy vi...