I see what Xofenroht and SHadow are saying, and I can understand that, but I gotta figure the guys a non practicing protostant or something. I mean, he spent, his entire Childhood being brought up as a likely Christian. And I suppose if he really thought about it, sure he may come to that conclusion that Chritianity doesn't include him either. But, I think he more likely just stopped really caring at all about weather he was anything. He definatly believes in a higher power, hell, he's met the people that work for him. All in all, I would say he isn't anything really at this point, though he was likely raised as a Christian. People seem to make religion out like it's a race or something. Like, because your parents were Jewish, and you grew up Jewish, then your Jewish, when really your whatever the hell you want to be once you make up your mind. Fact is, the only time I ever saw Supes in church was in For Tommorrow, and even then, we know he was just looking to talk to somebody. I've never seen him and Lois at Church one Sunday Morning when freakin Braniac Attacks have you? So we really don't know.
And as far as him being Jewish, well, he may have been created as a Moses like character by a couple of Jews, and Kal El may also be a Hebrew name, but he's still an Alien who grew up in a portion of the world where there just aren't that many Jewish families running around. I mean, have you ever seen Pa Kent with one of those little hat thingies on his head reading the Tora?