Well in defence of one piece I'll name a few of the changes done for the dub. Please note the dub is a horrible piece of garbage that is beyond redemption while post Buggy the Dub is a very good series.

1:First ALL of the voices are just plain terrible in the dub to the1 point of wanting to rip your ears off.
2:Changing the Marines guns to super soakers and popguns and calling them the Navy.
3: Renaming Zoro to Zolo and Luffy D Monkey to Loofy D Monkey.
4: Changing sanji's cigarette into a lollypop and Smoker having his cigars removed entirely while they leave the smoke and nake him Chaser.
5: removing all of the blood and destroying basically every fight scene as a result.

The series is definatly odd but its about as much a kids show as Hunter X Hunter and despite how they look in general they are very adult.

If you watch Getbackers abort viewing at 26 while the show is still good and do not finish it.

Also try out Fate/Stay Night you would almost definatly enjoy it and its still running.