Edward Norton as Lex Luthor in Superman?

A reliable source chimed in with news that Edward Norton is under serious consideration to play Lex Luthor in the new “Superman” film. Apparently, it’ll all come down to whether Norton can bulk him self up, physically, for the role. Sort of the way he looked in “American History X”. We’re talking Director Brett Ratner in the new week so we’ll suss this one out then. Meantime, it’s interesting casting idea…