Superman: The Man of Steel may already have its rogues gallery set to headline with Michael Shannon as General Zod. However, the latest rumor, is that the Summer 2013 film may also feature Supes' other signature villain, Lex Luthor. -- Played by star of The Hangover films, Bradley Cooper!
According to Cosmic BookNews, a tip informed them that after Cooper's role in the upcoming adaptation of Milton's Paradise Lost fell through, the actor was recruited to make what will simply be a cameo in the upcoming Superman reboot as the iconic industrialist who emphasizes the "mega" in megalomaniac.
This rumor is certainly unconfirmed, "take with a grain of salt" material. However, stranger things have happened, and director, Zack Snyder may realistically want to plant the seeds for a potential sequel by including a Luthor cameo. (Whether he is played by Cooper, or someone else.)