Naruto/Sasuke. I was waiting for their final fight the whole time (tho it's not like I was gonna drop the series anyway). The actual fight didn't reach my expectations (btw check my sig out if you want to watch a fan-made animation of their fight). I expected more from it; their fight only lasted four chapters long and most of it was just flashbacks/talking. However, the conclusion of their fight certainly made up for the wait. It was satisfying to see Sasuke finally opening up his true feelings to Naruto and joining hands with him. The whole scene was executed beautifully, especially when the amount of symbolism incorporated into it was astounding.