All star superman takes a really interesting look at the character. I actually saw the animated movie on the comic and I have to say it was one of the greatest adaptations of clark kent I have ever seen. Most versions of clark kent have been really obvious and involved a somewhat different hairstyle and glasses. Even if it is just a comic book the logic behind superman's secret identity has always been a bit ridiculous. However, the clark kent that was shown in all star superman (more so in the animated version) could actually be another person. He doesn't just have different hair and glasses but the way he acts, the way he holds himself, even his posture and the way he walks is different. He doesn't just wear a disguise he becomes a different person. It was a really well thought out and welcome change.