Right, so we all know that Oda has a knack for ending each chapter with a bang, and personally I'd like to nominate the entire series…but Every now and then Oda outdoes himself, as seen in the two most recent chapters, which are emotionally powerful and makes the reader scream for more, respectively.
So, what have put you furthest on your seat?
I myself read up to vol 34 at one time, so most of my cliffhangers are from after then. Nevertheless:
Chapter 153: Hiruluks Sakura...sniff.
Chapter 178: Luffy Dies?!!
Chapter 99: Truly, the legend was about to begin...
Chapter 210: The anime beats it, but still a damn good "artistic" chapter.
Chapter 345: You all know it...man, the weeks after that was painful!!!!
Chapter 331: Duel me!!! Shit, I was biting my fingernails!
Chapter 317: K.O ! Luffys' most badass victory ever!
And my ultimate favourite:
Chapter 198. CROCODIIIIILE!!!! Epic.