Personally I'm a big Brandon Routh fan...he wasn't the problem with "Superman Returns" he just wasn't given enough to do as Superman. Almost all of his dialogue was written for him as Clark Kent. Remember that Routh was an unknown too when he wast cast for "Superman Returns" after a long and hundreds of candidates. I'm sure that whenever casting resumes for Nolan's "Superman" if they haven't decided on Routh reprising a role they'll repeat the same process and we could have a new Superman again. I like Jon Hamm...after that parody he did a year ago or so I think he'd be a great Lex.