Some sites I've been on before have a rotating header. (Don't kill me if this isn't the exact technical term!) Basically, everytime you refresh the page, the header image changes. You have several and it just keeps cycling between them. That is something we can do if we want....and can figure out the technology behind it. Can't be that hard, right?
That or when we get more sections put up, each section could have its own header. How cool would that be?!