I think it would be cute to have a quick scene with the three previous (living) actors to play Superman. Tom Welling, Dean Cain, and Brandon Routh. Have them all be in a bar, all looking way different - Welling recently has been seen w/a buzz cut and a goatee, have Route have died hair and a stache, you know have them all not *look* the part they played at all.
But the context of the scene should be that Superman is stopping the baddy, breaks through the wall of a bar or something and stuff, they just sit there unphased, he apologies and goes back to his fight and their conversation either before/after should just be a brief bit about the costume.
Welling: "Man, I'd never be caught dead wearing anything like that get-up. Gimme a nice leather bomber jacket or something."
Cain: "Like you could be a superhero anyway. You're blind as a bat with those coke-bottle glasses!"
Routh: "I dunno, it's pretty slick to me, that outfit. Though I think he needs some color to break it up in the middle. Some red or gold or something."