Outlaw Star easily. One of the only series where not only did the cast all fit perfectly, they fit significantly better than the original Japanese cast did as well.
I don't remember for my life how Outlaw Star' english dub sounded.
I like Samurai Champloo's dub. I always though Steven J Blum's voice fit best with Mugen, among the other three or so dozen characters he's voiced.
As far animes that had better english dubs than original jp dubs go, I would honestly have to say DBZ, due in part to how bad I thought the JP dub itself was.
Generally, I think the original Japanese dubs suck, so it doesn't take much to improve on them.
That said, there are MANY anime dubs that somehow succeed at being as bad as or worse than the japanese voice acting.
That said, higher quality shows usually have better English voice acting than the original...almost across the board. An exception would be Naruto. They are fairly equal.
Some great dubs were mentioned above.
Unfortunately, Afro Samurai wasn't a dub, or else I would chose that.
I only watched Samurai Champloo in Japanese. I really prefer to watch every anime in Japanese, not because it's some sort of linguistic fetish or something...but because some things are lost in translation due to the English dub trying to match the mouths.
Retardedly enough, the Japanese seem to be out of sync with the characters, quite often. Even "high yen" (I don't know what they say for "high dollar", over in Japan, lol.) shows like Bleach have out of sync voice acting. It's rather stupid, really, which is one of the reasons I say most Japanese voice acting sucks.
"To all visitors from Transylvania looking for the head of Voivode Dracula: Yes, we have it. Yes, he's dead. No, you cannot see it. No, he will not return and invade you again. It has been over thirty years, please stop pestering us."
I liked Ultimate Muscle's dub. Cowboy Bebop, and Samurai Champloo both are great dubs. I also liked Fist of the North Star's dub, and the original Akira dub.
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