I fucking love this show. Many of you may remember it from when it was on toonami on Cartoon network, but that was dubbed "4 kidz" :P. However the actual uncut/japanese versiion is sooo much better. Anyways yeah, if you wanna watch it in good quality (unfortunately with ads :P) then go to: http://www.animecrazy.net/one-piece-episode-1/
You may think the show is weiird at first, but if i were you, I'd give it a chance :)
And yes, I am aware that an uncut english-dub version exists, but i have no idea where to find it so yeah lol