One Piece making #1 was expected, but in all honesty I would never think of ranking it ahead of anything by Urasawa, or quite a few of the other manga on the list. I understand that TZ likes it though, so I won't dwell on this, and overall, I could imagine worse stuff making #1, so I'm at least glad that the #1 spot was taken by something that I like and enjoy. My only real gripe with One Piece is that I personally don't find it to be constant "awesome" like most other people do here. For me, personally, it has its highs and lows, often involving a lot of build-up with each arc before it gets to the really good and exciting stuff.
I am VERY glad that Rurouni Kenshin made the #2 spot, as it is very well deserved for it.
I am also glad to see that Monster made it very high onto the list, but I would have liked to see it make its way into the top 5 (and it was so close, too).
Death Note being within the top 5 is no surprise, and personally, I think that its spot is perfect for it. Its one of my favorite manga, and unlike most others, I actually enjoyed the 2nd arc for what it was.
Bakuman making the list is a surprise since its still a relatively recent series in my eyes, having been running in WSJ for just over a year now. I'm glad that it did make the list, though, as it deserves it.
I'm rather sad by the lack of Onizuka on this list, but oh well, at least Onizuka himself made his way onto the top 25 of the top 30 anime characters list.
Yu Yu Hakusho making the #11 spot seems like a perfect placing for it to me.
As for HXH, I'm glad that it made the top 5. However, unlike some others, I still say that YYH has more consistent quality than HXH, even in the manga, with the exception of the last arc. That said, because the last arc of YYH was so utterly horrible in the manga, I can't disagree with HXH being Togashi's better "manga." Although, when it comes to the anime which fixes the few major flaws that the YYH manga had, I would take YYH over HXH in a heartbeat, simply because I just find the characters to be quite a bit more to my liking (but they, that's just me, and I think that I'm kind of alone on this opinion on the TZ anime board ).
Overall, this was a very good list. There are very few rankings that I disagree with, and even the ones I disagree with are still very acceptable to me.