A little while ago, director McG (This Means War) was attached to Flyby, a Superman film written by J. J. Abrams. Robert Downey Jr. was locked for the role of Lex Luthor, Superman's arch nemesis, but the movie was canned for whatever reason. Ironically, they too had an eye for Henry Cavill as the Man of Steel.
After thinking about it? I'd've loved to have seen RDJ play Luthor. Not sure how this movie would've turned out, though. J.J. Abrams is a talented guy, but McG... Well, This Means War speaks for itself. Flyby is an interesting choice for a title too. I think that would've hurt it.