I just literally stumbled across this while reading about something else. We all know naruto's full name "Naruto uzumaki", and we all know "uzumaki" can mean "whirlpool", coming out to "naruto whirlpool" (or whirlpool naruto if you're using japanese pronunciation), well check this out, there actually IS a naruto whirlpool in japan Info link And the bridge that crosses it is called the naruto express bridge =P (similar to the great naruto bridge in the naruto universe that crosses less then pleasant waters). Perhaps this is where his name came from? or it could be just a interesting coincidence.
This may have been (and probably has been) brought up before, and if so i'm sorry for re-posting info, but i just thought it was kinda neat.