Tom Cruise and Jude Law for Ozymandias, Simon Pegg for Rorschach. It's a testament to the good casting/acting in the film that I can't imagine anyone else doing justice to the roles. Jude Law may have worked, but the Cruiser? Please! You're right, though - fascinating trivia. It's solidifying my need to find a DVD copy and watch with lots of pausing to pick up the background detail.