"Tudors" regular Henry Cavill has been chosen as the next man of steel, playing the dual roles of Superman and his mortal alter-ego Clark Kent in the upcoming Warner/Legendary co-production of "Superman." The British actor is best known for playing confidante Charles Brandon to Jonathan Rhys Meyers' Henry VIII in Showtime's acclaimed period-drama series " The Tudors ," but already seemed poised for a feature-film breakout with a starring role in Summit's upcoming action film " The Cold Light of Day ," which also features Bruce Willis and Sigourney Weaver. He's also set to star in Relativity's fantasy-drama " Immortals " alongside Mickey Rourke later this year. Cavill has tried to step into a big iconic studio role before, unsuccessfully auditioning for the " Batman " role won by Christian Bale in 2005, and the 007 spot that went to Daniel Craig. According to a Warner official, Cavill's name