I think their album covers are pretty good, I especially like Crush cover. But wasn't it Jon who wrote the Slippery When Wet text? I remember reading that somewhere. And that there were going to be some girls washing cars on the cover (that picture actually is there somewhere, at least in LP, I'm not sure about the cd and can't be bothered to pick it up ) but they didn't want to sell albums with the help of the cover so they decided to change it.