I just got Shaman King: A Boy Who Dances With Ghosts on DVD from my best friend as a Chistmas gift today, and it's pretty different from the TV series. It doesn't have any of the same quotes as posted on this website, and they don't use Americanisms either.
I'm not comparing the Anime/Manga and I'm not comparing Japan/En version. Just the English show as it is.
Shaman king is a very good shonen anime that takes inspiration from Jojos bizarre adventure. Even though it was dubbed by 4kids back in 2003 it was a very dark series.