Well, you know... Superman is a very normal name compared to some that I have read recently.
There's a couple in British Columbia (Canada... yes...) whose four kids are named:
Repent of Your Sins
Repent or Burn Forever
Messiah is Coming
Mashiah Hosannah
I'm NOT kidding. I can't find the article in English, but I know I have a bookmark to a page in French which states sources and things... on my other computer though. Anyway... suffice it to say, it's true.