I’m hearing that Tom Cruise is getting serious about Rock of Ages, the Adam Shankman-directed New Line musical based on the Broadway stage hit. He’s not the star; this would be a supporting character departure like Cruise has played in Tropic Thunder and Magnolia. Here he’d be the decadent veteran rock star, Stacee Jax, which sounds fun. Cruise first came up as a possible participant in the film in October. He became attached in December to At the Mountains of Madness, which Guillermo del Toro and James Cameron are prepping at Universal. The two films could fill his 2011 dance card.