The adaptation of "Rock of Ages", a movie based on the musical about an 80’s rock star named Stacee Jaxx, just recently had a read through. In case you didn't know already, Tom Cruise is playing Stacee Jaxx. And he was (the only actor) in character for a read through with Mary J. Blige, Malin Akerman, Jullianne Hough, Alec Baldwin, Russell Brand and Paul Giamatti. It seems to be a little early for such practicing, but turning Tom Cruise into a fictional rock star just might take that long.