When we discover that Ace is Luffy's older brother. The fight against Crocodile was friggin cool too :D

When Nami figures out that Jaya was divided long ago, and the fight against Eneru.

... they left Arabasta, showing the "X" mark in their arm to Vivi; teling her that they'll be friends forever. That was the most touching moment of One Piece, in my opinion.

... the discovery of Poseidon, the legendary Weapon. "We came here, found the text, and followed its guidance", Gol D. Roger wrote. The "legendary weapons" discovery gave a new, a mythological air to the series. There's something BIG in One Piece, something that can change the whole world, and Luffy may be after it (since the legendary weapons can be connected to the One Piece, after all). This gives an endless and immense universe to the One Piece world.

... the Shichibukai meeting, where we get to know Donquixote DoFlamingo and Bartholomew Bear. Meeting two more members of the Shichibukai AND the highest member of the Marine (Dai-Buddha Zango) was really cool. These two chapters made volume 25 my favorite volume along with volume 23.

..."God can never be defeated! I'll come back some day... I will not allow anything in this world to stay in my way! You little specks of trash! Yahahahaha... Only I am worth for this... The endless land, like in a dream... Go Maxim!!! To the land that grows in the darkened sky! The endless land!"- this is what Eneru said when he left for a journey to conquer the Moon. Although Crocodile is my favorite villain so far, I don't think he had any "unforgettable quote". But Eneru's last words after his beating were one of the best quotes in One Piece. It comproved his insanity, making it a fact that Eneru is undoubtly mad.

... Portgas D. Ace is Monkey D. Luffy's brother? That was the greatest surprise in the manga so far.

... you can be sure chapter 320 will be one of my favorite moments too. "I'll tell you about your grandfather", Admiral Ao Kiji said. That's a very interesting thing, we'll know more about Luffy's and the own story background. Also, Ao Kiji is a very interesting character, by the simple fact he's one of the three strongest men in the Marine.

What are your theories on Luffy's grandfather? They have some interesting one's up on Kaizoku-Fansubs Forums :D . I love reading their forums. Do you go there? Oh, anyways, yea your right Ao Kiji is a really interesting character, but I can see him going "you ought to die now......... but I don't feel like doing it" lol. Man what a wait we have to go through with so many questions to be answered. :(

Well, I haven't read chapter 319, but I know Ao Kiji said that ;)
Anyways, we can't form a theory now because there's no facts to hold it onto. So far, just the will of the "D." name.
Well, I really don't think he's Gol D. Roger's grandson. But it's a high possibility, since we don't know how old was D. Roger when he was executed. But it's too obvious for me.
I'd say Luffy's grandfather was a great friend of Gol D. Roger. Best friends who shared the same dreams. They shared the "D." name, which was originated in their friendship, and passed onto their families. I also think that Marshall D. Teach, the Blackbeard, has something to do with this story. He also has the "D." name. Perhaps he's a real relative of Gol D. Roger?

And no, I don't post at the K-F forum, although I visit there sometimes ;)

Yea, well once you've read 319 hit me up . Theres some reason I have to believe that its not Gol D. Roger that is his grandfather, but I dont wanna spoil anything for you. Do you wait on the Null releases?