If you are a fan of one piece than I recommend fairy tail. Those who watch fairy tail often think one piece and I think that is due to the exgerated facial expressions. Fairy Tail is an anime following Natsu and his friends. Lucy, Erza, Gray, and Happy as well as the rest of the Fairy Tail guild crew. The creative mind behind this anime is the same mind that was behind Rave Master. You can see that in the anime in terms of references. Also I think the cast is perfect english double for the Japanese one. Here is the trailer. http://www.youtube.com/watch?v=mAAKPx-ndAg . Here is an episode http://www.youtube.com/watch?v=sAxbI5FoWbk&feature=relmfu