New Line has released a fresh trailer for Rock of Ages, giving a bit more of a glimpse of Tom Cruise as the decadent hair band icon Stacee Jaxx. I’ve seen the film, a fun confection that is Mamma Mia! for those who came of age in the 80s. The real revelation is Cruise. He throws himself headlong into the role, spent months learning to sing and prance like a rocker, and he crushes it.