One Piece - I know this is pretty popular but so many people treat it like crap because they've seen up to Skypia on 4kids and think it's not worth it and then watch like four of the beginning episodes in Japanese and don't like the voices. Water 7 is like when the story really starts to pick up and the voices were changed after Season 1. Also people seem to dislike it because Luffy hasn't found One Piece, that's such a hypocritical thing to say when they like Naruto and they think it's fine that he never becomes Hokage.
Dragonball - I'm not talking about Z, I'm talking about the original series where they actually used techniques and strategies in their fights. People don't seem to like because they didn't just power up and use a strong energy blast 50 times for the whole fight and Super Saiyan.
One piece "Was" but with the start of the simulcast on funimation.com and the uncut releases I think the series is starting to take off in America.
Unrelated, but if you want, I think you should join my group. It's a really good One Piece group and I've been trying to get more members (We have eleven as of now). If you really like One Piece I think you would enjoy it.
OMG I didn't knew that Detective conan was underrated! I think that it was a really fantastic anime!
Detective conan- It had a really good plot. It was also made using wits. Conan was cute! :P
I think that these two reasons are enough for making it pretty popular coz most of the anime made nowadays don't have these things. o3o
I agree with you, Conan is great. That's why it's such a shame that the series has a very small fanbase in America. Why must good anime die in America?